12 letters

neoformative performative ∙ nonnormative ∙ rejuvenative impregnative coordinative ∙ undominative denominative ∙ unnominative illuminative ∙ unruminative fashionative opinionative ∙ passionative preternative uninchoative anticipative ∙ emancipative ∙ exhilarative ∙ unseparative exprobrative ∙ consecrative ∙ nonlucrative deliberative ∙ unulcerative exulcerative unfederative desiderative ∙ vociferative exaggerative ∙ accelerative ∙ untolerative denumerative degenerative ∙ Regenerative ∙ ingenerative ungenerative unvenerative remunerative ∙ unimperative preoperative ∙ nonoperative ∙ exasperative ∙ recuperative ∙ vituperative ∙ obliterative ∙ alliterative ∙ unalterative asseverative ∙ conspirative perspirative undecorative edulcorative ∙ invigorative ∙ ameliorative ∙ unpejorative rememorative nonnarrative ∙ infiltrative ∙ magistrative ministrative ∙ illustrative ∙ unindurative unfigurative inaugurative unmaturative compulsative ∙ nonpulsative condensative compensative ∙ dispensative ∙ conversative ∙ discursative incrassative ∙ noncausative inhabitative undubitative capacitative unrecitative quidditative ∙ unmeditative hereditative incogitative ∙ excogitative ∙ debilitative ∙ facilitative ∙ preimitative delimitative ∙ nonimitative ∙ affinitative exploitative ∙ abirritative inirritative unirritative unhesitative quantitative ∙ auscultative ∙ consultative ∙ augmentative ∙ alimentative ∙ commentative fermentative ∙ tormentative presentative ∙ pretentative nontentative sustentative ∙ preventative ∙ undenotative semirotative dissertative ∙ comfortative postmutative sternutative ∙ unamputative continuative ∙ inadequative colliquative ∙ inderivative underivative dissolvative unrenovative uninnovative preservative ∙ conservative ∙ overlaxative antireactive hyporeactive overreactive stupefactive ∙ putrefactive ∙ liquefactive ∙ chylifactive petrifactive ∙ semelfactive satisfactive psychoactive ∙ cardioactive birefractive unrefractive undetractive unretractive unattractive ∙ predefective nondefective nonaffective subeffective preeffective noneffective ∙ noninfective ∙ disinfective imperfective ∙ unperfective preobjective nonobjective ∙ unsubjective preadjective unprojective introjective ∙ nonselective ∙ undeflective unreflective ∙ irreflective ∙ uninflective intellective ∙ recollective ∙ uncollective unrespective ∙ irrespective ∙ omnispective unsuspective nondirective ∙ uncorrective resurrective ∙ architective unprotective nonaddictive ∙ unpredictive unvindictive retrodictive ∙ interdictive ∙ jurisdictive ∙ constrictive ∙ unconvictive unadjunctive nondeductive ∙ nonreductive preinductive noninductive ∙ unconductive reproductive ∙ unproductive ∙ introductive ∙ constructive ∙ nondepletive accompletive nonaccretive nonsecretive interpretive ∙ uninhibitive cognoscitive preprimitive nonprimitive precognitive ∙ noncognitive ∙ procognitive indefinitive undefinitive semipunitive unintroitive nonnutritive ∙ disquisitive ∙ ditransitive ∙ intransitive ∙ untransitive nonsensitive ∙ rheopositive seropositive ∙ Autopositive overpositive postpositive ∙ unrepetitive nonintuitive ∙ invariantive combinantive preincentive Disincentive ∙ excrementive nonretentive unpreventive preinventive interventive complaintive hyperemotive unlocomotive thermomotive nonpromotive nondeceptive ∙ nonreceptive unpreceptive introceptive imperceptive ∙ unperceptive ∙ apperceptive ∙ interceptive ∙ insusceptive ∙ unsusceptive subscriptive ∙ prescriptive ∙ conscriptive proscriptive ∙ unredemptive unresumptive transumptive ∙ unabsorptive posteruptive ∙ interruptive ∙ incorruptive ∙ uncorruptive nonassertive ∙ extravertive unsubvertive nonrevertive introvertive ∙ extrovertive transportive ∙ uncontortive nonextortive unsuggestive nondigestive decongestive ∙ uncongestive intempestive ∙ nonresistive nonassistive inexhaustive ∙ unexhaustive uncombustive maladjustive ∙ nonadjustive contributive ∙ distributive ∙ nonexecutive ∙ proexecutive undiminutive substitutive ∙ constitutive ∙ nonreflexive ∙ quinquevalve subequivalve interinvolve ∙ counterprove cryopreserve ∙ Süssreserve

13 letters

uninfluencive prepersuasive nonpersuasive angioinvasive idiorepulsive noncompulsive preconvulsive overexpansive condescensive semidefensive overdefensive overoffensive comprehensive ∙ nonsuspensive overextensive nonresponsive ∙ corresponsive ∙ semipurposive anticorrosive ∙ nondispersive ∙ nonsubversive animadversive nonperversive nondiscursive ∙ neutropassive nonsuccessive preconcessive nonconcessive nonregressive preaggressive nonaggressive ∙ improgressive unprogressive ∙ retrogressive ∙ introgressive ∙ transgressive ∙ nondepressive nonrepressive preimpressive decompressive ∙ nonoppressive insuppressive unsuppressive preexpressive nonexpressive misexpressive nonpossessive nonsubmissive photoemissive ∙ nonpermissive ∙ nonpercussive semiocclusive venoocclusive overinclusive nonconclusive semiexclusive nonprotrusive unreprobative antisiccative hypothecative undeprecative uneradicative nonabdicative nondedicative nonmedicative impredicative ∙ unpredicative subindicative ∙ preindicative prejudicative ∙ nonjudicative Specificative ∙ mundificative ∙ qualificative ∙ amplificative magnificative significative ∙ rectificative certificative justificative ∙ unapplicative reduplicative ∙ induplicative unduplicative unexplicative communicative ∙ prevaricative unlubricative domesticative ∙ unsuffocative reciprocative ∙ unprovocative ∙ autoeducative overeducative unelucidative infrigidative consolidative ∙ accommodative ∙ antiexudative nonpermeative undelineative unpropagative hydronegative photonegative ∙ Internegative unsegregative nonmitigative uncastigative investigative ∙ uninstigative nonderogative suprerogative interrogative ∙ decorrugative unenunciative pronunciative semisociative unassociative unirradiative unrepudiative unretaliative nonpalliative appropriative ∙ unalleviative overtalkative ∙ intercalative ∙ uncorrelative overinflative dissemilative dissimilative ∙ extrapolative ∙ interpolative ∙ contemplative ∙ unsuperlative unlegislative unspeculative ∙ gesticulative ∙ uncalculative uninoculative uncirculative uncoagulative nonregulative strangulative repullulative nonsimulative dissimulative ∙ unstimulative noncumulative ∙ expostulative ∙ approximative ∙ unreformative uninformative ∙ vasoformative undesignative uncombinative ratiocinative ∙ hallucinative ∙ subordinative ∙ unimaginative ∙ unoriginative nonlaminative contaminative ∙ disseminative ∙ recriminative ∙ regerminative ungerminative determinative ∙ unterminative exterminative ∙ nonruminative peregrinative assassinative agglutinative ∙ sanctionative impersonative coalternative participative ∙ preoccupative undeclarative nonseparative equilibrative reverberative ∙ incarcerative confederative ∙ considerative ∙ proliferative ∙ verbigerative refrigerative ∙ nontolerative agglomerative ∙ unenumerative aregenerative nongenerative progenerative unexonerative nonimperative paraoperative perioperative uncooperative ∙ postoperative ∙ commiserative ∙ unreiterative perseverative ∙ conflagrative ∙ reintegrative ∙ unintegrative

Words with a ∙ are valid Scrabble words (SOWPODS word list)