英検対策の語い力強化用問題集としてＰａｓｓ単が適切かどうか調べるため、過去９回分の過去問から選択肢、正解となった選択肢をピックアップし、Ｐａｓｓ単での収録度合いを検証した。
また、収録されている語い、収録されていない語いの難易度、英検１次の語い問題自体の難易度の尺度とするため、ウェブ版英辞郎でそれぞれがどのぐらいのレベルと評価されているかをあわせて調べた。
（英辞郎はレベル１〜レベル１２まで、難易度を基に１，０００語ごとに１２，０００にレベルをつけているとされる）
（表１：平成１１年度からの英検１次試験９回分の１番の問１から２４まで）
表の見方：
年度回：最初２桁が年度、下２桁が実施回。
番号：問題番号。
Pass 単：Pass単収録の有無。○は収録、×は収録なし。関連語が収録されている場合は、それを載せた。
アルク：ウェブ版英辞郎のレベル記載。アルク「PowerWords」収録巻と同じと見て差し支えないか。
生データへ
Ｐａｓｓ単＆英辞郎比較へ
正解のレベルへ
選択肢出現頻度へ
年度回 番号 選択肢 １ 選択肢 ２ 選択肢 ３ 選択肢 ４ 正解 正解となったもの Pass 単 アルク 1101 1 attentive prevalent tentative adherent 3 tentative ○ 9 1101 2 revitalize fabricate stabilize implicate 2 fabricate ○ 10 1101 3 articulate superficial mundane pathetic 1 articulate ○ 10 1101 4 plead step pluck stem 4 stem ○ 4 1101 5 constitute engross seclude materialize 1 constitute × 5 1101 6 conspire infuse contrive inflict 2 infuse ○ 9 1101 7 hapless peerless tactless flawless 1 hapless × 11 1101 8 depreciation demolition detriment derision 3 detriment ○ 12 1101 9 ambiance complacence eminence nuisance 1 ambiance × × 1101 10 exploit inhibit execute yield 2 inhibit ○ 8 1101 11 shrewd copious potent menial 4 menial ○ 12 1101 12 lavishly nominally concisely frugally 4 frugally frugal 9 * 1101 13 devise revert surmise muster 3 surmise ○ 9 1101 14 dormant buoyant pungent ardent 1 dormant ○ 10 1101 15 wrath tantrum rampage fury 2 tantrum × 11 1101 16 forfeitable formidable pernicious pretentious 2 formidable × 7 1101 17 pliable pompous deplorable discreet 4 discreet ○ 9 1101 18 censure instigate accost coerce 1 censure ○ 10 1101 19 extraneous miscellaneous ubiquitous judicious 3 ubiquitous ○ 11 1101 20 lapse fiasco ditch spite 2 fiasco ○ 11 1101 21 brigade candor quandary cinch 3 quandary × × 1101 22 verify rectify fortify mollify 4 mollify × × 1101 23 propriety enmity propensity equity 2 enmity ○ 9 1101 24 penetrate palatable disparage decorous 3 disparage ○ 11 1102 1 puff grip fuel gush 3 fuel × 2 1102 2 inception inclination incision incursion 1 inception ○ 12 1102 3 placid perilous lucid populous 2 perilous × 8 1102 4 mortify perfidy sanctify nullify 4 nullify ○ 12 1102 5 lament detest rebuke deter 4 deter ○ 9 1102 6 diffuse taint disperse plunge 2 taint ○ 9 1102 7 ditto prank boon maxim 3 boon ○ 9 1102 8 perturb beguile exult retain 1 perturb ○ × 1102 9 sparsely bountifully thriftily adamantly 4 adamantly × 11 1102 10 exhort converge ostracize assuage 3 ostracize ○ × 1102 11 rendition fruition contention volition 1 rendition × 11 1102 12 evict extenuate infringe inundate 4 inundate ○ 11 1102 13 voracious volatile impetuous idyllic 2 volatile ○ 10 1102 14 expulsion aversion ultimatum ovation 3 ultimatum ○ 11 1102 15 wane forebode pervade burgeon 1 wane ○ 11 1102 16 vacillate emulate undulate placate 4 placate × 11 1102 17 unanimously unwittingly anonymously autonomously 1 unanimously unanimous 7 * 1102 18 clout knack crux vent 2 knack × 11 1102 19 postulate typify stipulate conjecture 3 stipulate ○ 10 1102 20 contingency discrepancy malignancy expediency 1 contingency ○ 11 1102 21 tenacity paucity felicity complicity 4 complicity ○ 11 1102 22 languid succinct callow congenial 2 succinct ○ 12 1102 23 rebate detonate retaliate infuriate 3 retaliate ○ 11 1102 24 oblique paltry sordid docile 4 docile × 12 1201 1 undaunted unfound unabashed unscathed 2 unfound × 3 * 1201 2 disband saturate corrode fluctuate 3 corrode ○ 12 1201 3 affinity mediocrity animosity incongruity 4 incongruity congruity 12 1201 4 optimum cohesive fallible lackluster 1 optimum × 12 1201 5 entrap feign entail deluge 3 entail × 10 1201 6 repudiate reiterate remunerate reminisce 2 reiterate ○ 12 1201 7 diffident trifle dubious pertinent 4 pertinent ○ 10 1201 8 rationale scourge adage elucidation 1 rationale × 11 1201 9 arduous audacious indolent indelible 4 indelible ○ 11 1201 10 cessation proliferation negation trepidation 2 proliferation proliferate 10 1201 11 denounce demote deploy deflect 1 denounce ○ 9 1201 12 plethora panacea pariah poise 2 panacea ○ 12 1201 13 rebutted exile procure vindicate 4 vindicate ○ 11 1201 14 adept listless erratic ulterior 4 ulterior ○ × 1201 15 abrasively auspiciously ominously wistfully 3 ominously ominous 11 * 1201 16 precept proclivity preclusion prognosis 1 precept ○ 12 1201 17 infiltration impeachment enunciation encroachment 4 encroachment encroach 12 * 1201 18 subversive sumptuous rudimentary retrograde 3 rudimentary ○ 12 1201 19 revocable exponential altruistic flimsy 2 exponential × × 1201 20 ebb lurk fret bask 4 bask × 11 1201 21 badger baffle bungle buffer 2 baffle ○ 10 1201 22 figment buckle fracture wrench 1 figment ○ × 1201 23 ladle fawn teeter cane 3 teeter × × 1201 24 ploy lore cache hedge 1 ploy × × 1202 1 appraise recount comprise surmount 3 comprise ○ 7 1202 2 refurbish repariated recuperate reprehend 1 refurbish ○ 10 1202 3 acrid spurious astute indignant 3 astute ○ 11 1202 4 attribute tender discharge implant 2 tender × 4 1202 5 insurgent insolent inadvertent interminable 3 inadvertent ○ 12 1202 6 culminate aggregate relegate satiate 1 culminate culmination 10 1202 7 zest snap gist hunch 4 hunch × 11 1202 8 prolifically curtly somberly diabolically 3 somberly somber 11 * 1202 9 ambivalent vibrant belligerent vagrant 2 vibrant × 11 1202 10 snub defuse ransack bereave 3 ransack ○ 12 1202 11 unitary inclusive plenary reclusive 4 reclusive recluse 12 * 1202 12 irrigation evaporation precipitation dehydration 3 precipitation ○ 12 1202 13 sporadic lethargic oblivious indigent 1 sporadic ○ 11 1202 14 distend alleviate mesmerize affiliate 4 affiliate affiliation 10 1202 15 epigram eulogy effigy enigma 3 effigy ○ × 1202 16 embark bolster clench tether 2 bolster ○ 10 1202 17 dissemination disintegration vandalism versatility 3 vandalism × 11 1202 18 exasperate exonerate exculpate excavate 4 excavate × 12 1202 19 renegade novice mentor culprit 3 mentor × 10 1202 20 capricious heinous precarious ingenuous 2 heinous × × 1202 21 spur spree sprint spout 2 spree × 11 1202 22 huddle bulge haggle gloat 1 huddle ○ 10 1202 23 remorse amnesty solace tumult 3 solace × 11 1202 24 prod wreak curb abate 2 wreak × × 1301 1 affix ordain adjourn intervene 3 adjourn ○ 12 1301 2 inane intrinsic convertible versatile 4 versatile × 10 1301 3 obtusely discreetly explicitly austerely 2 discreetly discreet 9 * 1301 4 ascribe contrive bestow condemn 1 ascribe ○ 8 1301 5 dissuade evade revoke detract 3 revoke ○ 11 1301 6 actualize mesmerize stigmatize vaporize 2 mesmerize ○ × 1301 7 curtail buttress subsidize inaugurate 1 curtail ○ 11 1301 8 unruly unseemly uncanny uncouth 3 uncanny ○ 11 1301 9 radius perimeter symmetry sphere 2 perimeter × 11 1301 10 retention disparity mercenary severance 4 severance sever 10 * 1301 11 permeate oscillate congregate reciprocate 4 reciprocate ○ × 1301 12 footage meter slice mileage 1 footage × 11 1301 13 banter extol confiscate relinquish 2 extol extol × 1301 14 antagonist chauvinist proponent component 3 proponent × 10 1301 15 insert instill insinuate incriminate 3 insinuate insinuate 11 1301 16 hindsight foreknowledge reconnaissance counterbalance 1 hindsight × 11 1301 17 turbulent perennial schematic prodigious 4 prodigious ○ 11 1301 18 mercy vanity awe homage 4 homage ○ 11 1301 19 forgery libel repute perjury 2 libel ○ 11 1301 20 dissect bluff quell beguile 3 quell × 11 1301 21 catnap scapegoat workhorse fishtail 2 scapegoat ○ 10 1301 22 eclectic forensic dogmatic autocratic 2 forensic ○ 11 1301 23 pitch phrase verse chant 1 pitch × 4 1301 24 haul gird mull mute 3 mull ○ 11 1302 1 recapitulate reimburse reclaim rectify 2 reimburse ○ 12 1302 2 collusion procession sequence proximity 4 proximity ○ 10 1302 3 holographic topographic demographic lithographic 3 demographic × 11 1302 4 galvanize infatuate ostracize intimidate 4 intimidate intimidation 9 1302 5 harness restrain encumber stimulate 1 harness ○ 9 1302 6 pliable caustic amenable hectic 4 hectic ○ 9 1302 7 soar shudder plummet pounce 3 plummet ○ 9 1302 8 exodus asylum stowaway moratorium 2 asylum × 11 1302 9 impudently impeccably imperviously imperceptibly 2 impeccably impeccable 11 1302 10 amass engross embed conglomerate 1 amass ○ 10 1302 11 conversant commendable circumstantial commensurate 4 commensurate ○ × 1302 12 incubate obliterate incarcerate emancipate 3 incarcerate incarceration × 1302 13 skirt cliff brink corner 3 brink × 8 1302 14 enmesh lambaste blemish embellish 4 embellish ○ 12 1302 15 repulse regress rescind redeem 3 rescind ○ 12 1302 16 debacle artifact impetus pinnacle 1 debacle ○ 11 1302 17 pedestrian incumbent perpetrator intercessor 2 incumbent × 10 1302 18 exuberant loquacious acrimonious resonant 3 acrimonious × × 1302 19 coax tame taunt expel 1 coax × 10 1302 20 brunt blight brawl brood 3 brawl ○ 11 1302 21 efficacy intricacy clemency solvency 3 clemency ○ × 1302 22 dupe elate flex cram 1 dupe ○ × 1302 23 vie vouch poach wince 2 vouch × 12 1302 24 mold slog mire vaunt 3 mire ○ × 1303 1 revoke exert undulate oust 4 oust × 10 1303 2 opportunely marginally prominently implausibly 2 marginally marginal 8 * 1303 3 debris dearth artifice abyss 1 debris × 10 1303 4 rustle rupture rumple rampage 4 rampage rampant 11 * 1303 5 affront servitude disavowal demeanor 4 demeanor ○ 11 1303 6 stifle crease instigate facilitate 1 stifle ○ 9 1303 7 appeasable indivisible viable liable 3 viable ○ 10 1303 8 austere futile gallant blatant 4 blatant ○ 11 1303 9 denounce foyer burrow venue 4 venue × 10 1303 10 accost acquit censure contrive 2 acquit ○ 11 1303 11 elude seclude intrude allude 4 allude × 10 1303 12 stark brazen rank posh 4 posh × 11 1303 13 abort extort repel dispel 1 abort × 9 1303 14 profuse zealous complacent contentious 3 complacent × 9 1303 15 dangle swindle poach plague 2 swindle × 12 1303 16 discrepancy dispensation misgiving misnomer 3 misgiving ○ 11 1303 17 insubstantial unrelenting inevitable untenable 2 unrelenting × 10 * 1303 18 rout plight niche cache 3 niche × 10 1303 19 scrape blotch twinge wrench 3 twinge × × 1303 20 eradicate expedite extenuate exemplify 2 expedite ○ 12 1303 21 destitute derisive dilute dainty 2 derisive ○ 12 1303 22 petition faction stipend dividend 3 stipend ○ × 1303 23 paucity polarity propriety propensity 4 propensity ○ 12 1303 24 provision armament pretension consignment 1 provision provisional 5 1401 1 precedent prerequisite prerogative premise 2 prerequisite × 12 1401 2 ineptly tediously opaquely meticulously 4 meticulously meticulous 10 * 1401 3 preclusion adhesion protrusion erosion 4 erosion erode 10 1401 4 segregate mitigate tarnish admonish 3 tarnish ○ 11 1401 5 steadfast temperate far-fetched constrict 1 steadfast × 7 1401 6 divest devour debunk debase 2 devour ○ 7 1401 7 exponent expedient adversary notary 3 adversary ○ 10 1401 8 brusque nauseous buoyant malignant 2 nauseous ○ 11 * 1401 9 prowl prong prod probe 4 probe ○ 6 1401 10 ardently impassively auspiciously commendably 2 impassively × 12 * 1401 11 consort concur tamper synchronize 3 tamper × 11 1401 12 scamper meander trespass scramble 2 meander ○ 11 1401 13 ascertain apprehend solicit subvert 3 solicit ○ 9 1401 14 placate belittle endorse laud 2 belittle × × 1401 15 dwarf esteem cherish detest 4 detest detestation 12 1401 16 enthrall appall exalt content 2 appall ○ × 1401 17 drafty paltry gaudy binary 2 paltry × × 1401 18 obtrusive obscure oblique oblivious 4 oblivious ○ 10 1401 19 livid lucid placid squalid 4 squalid ○ 12 1401 20 feud grudge fluke quip 3 fluke × 11 1401 21 audit debited remit charter 1 audit × 8 1401 22 globe wreath whirl sphere 4 sphere × 5 1401 23 echo falsify rebuff retain 3 rebuff ○ 11 1401 24 windfall cloudburst downpour snowball 1 windfall × 11 1402 1 evict exempt repress negate 1 evict ○ 12 1402 2 sooth tease lurch vex 4 vex ○ 10 1402 3 ambiguous extraneous explicitly reputable 3 explicitly explicit 8 * 1402 4 confer comply coalesce commune 2 comply × 8 1402 5 impart diffuse allot embed 3 allot ○ 9 1402 6 frisk filch fluster frazzle 1 frisk × × 1402 7 entity increment stipulation counterpart 2 increment ○ × 1402 8 replicate elongate delegate contemplate 3 delegate delegation 7 1402 9 radiation deviation aviation transgression 2 deviation ○ × 1402 10 adjacent malevolent impulsive exclusive 4 exclusive × 6 1402 11 regress prophesy reminisce emanate 3 reminisce ○ 12 1402 12 covetous precarious credulous voracious 4 voracious ○ × 1402 13 animosity affinity affability anonymity 1 animosity ○ 11 1402 14 predicate proliferate precipitate procrastinate 4 procrastinate ○ 12 1402 15 satiate muster plunder abate 2 muster ○ 10 1402 16 demure cursory prudent fraudulent 3 prudent ○ 5 1402 17 demise guise deluge trench 1 demise ○ 10 1402 18 cohesive corrosive conducive correlative 3 conducive ○ × 1402 19 inset onset intake outtake 2 onset × 10 1402 20 transiently semantically pompously vehemently 4 vehemently vehement 12 * 1402 21 enunciate recuperate circumvent regiment 3 circumvent ○ 11 1402 22 arena juncture whim caliber 2 juncture × × 1402 23 pigeonhole keyhole loophole peephole 3 loophole × 11 1402 24 cordon siphon careen skim 1 cordon × 12 正解となった２１６の単語のうち、関連語もＰａｓｓ単に収録されていなかったものは７４。
英辞郎で比較的簡単と想定される関連語も含めてレベル１〜１２に該当しなかったものは、３３であった。
トップへ（表２：Ｐａｓｓ単、英辞郎での扱い）
内訳
カテゴリー１：Pass単未収録、ウェブ版英辞郎にレベル記載あり（カテゴリー１についてはレベルも記載）
カテゴリー２：Pass単未収録かつウェブ版英辞郎にレベル記載なし
カテゴリー３：Pass単に収録、ウェブ版英辞郎にレベル記載なし
カテゴリー１（Ｐ×英○） レベル カテゴリー２（Ｐ×英×） カテゴリー３（Ｐ○英×） fuel 2 ambiance perturb tender 4 quandary ostracize pitch 4 mollify ulterior constitute 5 exponential figment sphere 5 teeter effigy exclusive 6 ploy mesmerize formidable 7 heinous reciprocate steadfast 7 wreak extol perilous 8 acrimonious commensurate brink 8 twinge incarcerate audit 8 belittle clemency comply 8 paltry dupe abort 9 frisk mire complacent 9 juncture stipend entail 10 appall mentor 10 increment versatile 10 deviation proponent 10 voracious incumbent 10 conducive coax 10 oust 10 debris 10 venue 10 allude 10 niche 10 onset 10 hapless 11 tantrum 11 adamantly 11 rendition 11 placate 11 knack 11 rationale 11 bask 11 hunch 11 vibrant 11 vandalism 11 spree 11 solace 11 perimeter 11 footage 11 hindsight 11 quell 11 demographic 11 asylum 11 posh 11 tamper 11 fluke 11 windfall 11 loophole 11 docile 12 optimum 12 excavate 12 vouch 12 swindle 12 prerequisite 12 cordon 12 unrelenting 10 * impassively 12 * unfound 3 * 60 14 19
Ｐａｓｓ単に収録されていない７４個のうち、２６個がレベル１０までの語い。
トップへ表３：全２１６の正解となった選択肢の、英辞郎でのレベル
トップへ
レベル 正解となった回数 Ｐａｓｓ単がカバーしていたもの １２ ３７ ２９ １１ ６１ ３７ １０ ３９ ２６ ９ ２０ １８ ８ ８ ４ ７ ６ ４ ６ ２ １ ５ ４ ２ ４ ３ １ ３ １ ０ ２ １ ０ １ １ １ × ３３ １９ 合計 ２１６ １４２
1101 contrive 1301 contrive 1303 contrive 1202 abate 1402 abate 1101 accost 1303 accost 1201 affinity 1402 affinity 1201 animosity 1402 animosity 1201 auspiciously 1401 auspiciously 1102 beguile 1301 beguile 1101 buoyant 1401 buoyant 1201 cache 1303 cache 1101 censure 1303 censure 1201 cohesive 1402 cohesive 1201 deluge 1402 deluge 1201 denounce 1303 denounce 1102 detest 1401 detest 1102 diffuse 1402 diffuse 1102 discrepancy 1303 discrepancy 1302 embed 1402 embed 1101 engross 1302 engross 1102 evict 1402 evict 1301 explicitly 1402 explicitly 1102 extenuate 1303 extenuate 1101 extraneous 1402 extraneous 1101 instigate 1303 instigate 1102 lucid 1401 lucid 1202 mesmerize 1301 mesmerize 1101 muster 1402 muster 1102 oblique 1401 oblique 1202 oblivious 1401 oblivious 1102 ostracize 1302 ostracize 1102 paltry 1401 paltry 1102 paucity 1303 paucity 1102 placate 1401 placate 1102 placid 1401 placid 1101 pliable 1302 pliable 1302 poach 1303 poach 1202 precarious 1402 precarious 1201 preclusion 1401 preclusion 1202 prod 1401 prod 1101 propensity 1303 propensity 1101 propriety 1303 propriety 1101 rampage 1303 rampage 1101 rectify 1302 rectify 1202 recuperate 1402 recuperate 1302 regress 1402 regress 1201 reminisce 1402 reminisce 1102 retain 1401 retain 1301 revoke 1303 revoke 1202 satiate 1402 satiate 1101 seclude 1303 seclude 1301 sphere 1401 sphere 1102 undulate 1303 undulate 1102 voracious 1402 voracious 1201 wrench 1303 wrench 1101 adherent 1401 adhesion 1202 affiliate 1402 ambiguous 1202 ambivalent 1402 anonymity 1102 anonymously 1101 ardent 1401 ardently 1201 arduous 1302 artifact 1303 artifice 1303 austere 1301 austerely 1302 commendable 1401 commendably 1101 complacence 1303 complacent 1102 contention 1303 contentious 1201 corrode 1402 corrosive 1301 curtail 1202 curtly 1101 derision 1303 derisive 1101 discreet 1301 discreetly 1402 enunciate 1201 enunciation 1303 exemplify 1402 exempt