20 letter words
18 letter words
17 letter words
16 letter words
15 letter words
- anticompetitive29
- antispeculative28
- electronegative26
- electropositive26
- excommunicative40
- incommunicative34
- intersubjective36
- intussusceptive28
- neoconservative28
- nonconservative29
- nonconstructive29
- nonexploitative32
- nonquantitative32
- nonreproductive29
- overimaginative29
- phosphorylative32
- photoconductive33
- prognosticative28
- radioprotective26
- retroreflective26
- superconductive32
- uncommunicative35
- undemonstrative26
14 letter words
- administrative23
- antiderivative24
- antireflective26
- chemoreceptive32
- conglomerative28
- contrapositive25
- cryoprotective29
- deconstructive27
- disaggregative25
- discriminative26
- disintegrative22
- hypersensitive26
- immunoreactive29
- inappreciative28
- interoperative22
- interpretative22
- multiplicative30
- nonacquisitive33
- noncommutative30
- noncompetitive29
- nonconsecutive28
- nonconsumptive31
- noncooperative26
- nondescriptive27
- nondestructive25
- nondistinctive25
- noninteractive24
- nonradioactive24
- nonrestrictive23
- nonretroactive23
- nonspeculative28
- overprotective28
- photoinductive29
- photooxidative31
- photoreceptive29
- photosensitive24
- proprioceptive30
- radiosensitive20
- reconstructive26
- redintegrative22
- redistributive23
- rehabilitative24
- representative22
- substantiative23
- supereffective31
- supersensitive23
- transformative25
- ultrasensitive21
- unappreciative29
- unconstructive28
13 letter words
- accommodative30
- acculturative26
- agglomerative25
- agglutinative24
- antinarrative19
- appropriative26
- approximative33
- argumentative24
- authoritative20
- collaborative25
- commemorative29
- commiserative26
- communicative31
- concentrative25
- confederative25
- configurative27
- contaminative25
- contemplative28
- contraceptive27
- corroborative23
- counteractive25
- demonstrative22
- deteriorative18
- determinative22
- exteroceptive30
- extrapolative28
- frequentative31
- gesticulative24
- hyperreactive27
- inconsecutive26
- incorporative24
- indistinctive23
- interoceptive24
- interpolative22
- interrogative20
- introspective24
- investigative24
- justificative33
- nonabsorptive25
- nonautomotive23
- nonconductive28
- noncumulative28
- nonderivative24
- nondisruptive24
- nonevaluative25
- nonexploitive30
- nonfigurative25
- nonproductive27
- nonsubjective35
- overassertive21
- oversensitive22
- overtalkative26
- participative26
- photonegative25
- photopositive25
- postoperative23
- precipitative26
- prefigurative26
- premeditative24
- proliferative24
- ratiocinative21
- reciprocative26
- recriminative24
- reduplicative26
- reintegrative20
- remonstrative21
- resuscitative21
- retrospective23
- reverberative24
- significative26
- subordinative23
- transmutative22
- uncompetitive28
- uncooperative25
- unimaginative25
- uninformative26
- uninstructive24
12 letter words
- accelerative23
- accumulative28
- adjudicative31
- alliterative18
- ameliorative20
- anticreative20
- apperceptive28
- appreciative25
- articulative21
- asseverative20
- assimilative20
- augmentative23
- compensative26
- conciliative24
- consecrative23
- conservative24
- constitutive21
- constrictive23
- constructive24
- consultative22
- consummative27
- continuative22
- contributive24
- coordinative21
- decongestive23
- degenerative20
- deliberative21
- denominative22
- denunciative23
- depreciative23
- desiderative18
- disincentive22
- dissociative20
- distributive21
- ditransitive18
- exaggerative27
- excogitative28
- exhilarative26
- exploitative27
- facilitative23
- fermentative23
- illuminative23
- illustrative19
- imperceptive28
- imperfective28
- infiltrative21
- intellective22
- interdictive21
- interpretive20
- interruptive21
- intransitive18
- irrespective22
- maladjustive31
- manipulative25
- nonaddictive23
- nonassertive18
- noncognitive24
- noncombative27
- nondeceptive25
- nondeductive24
- nondirective22
- noneffective27
- nonexecutive29
- nonimitative21
- noninductive24
- noninfective25
- nonintuitive20
- nonnarrative19
- nonnormative22
- nonnutritive20
- nonobjective33
- nonoperative21
- nonselective22
- nonsensitive19
- obliterative20
- opinionative21
- performative25
- posteruptive23
- postpositive22
- precognitive25
- preoperative22
- prescriptive25
- presentative20
- preservative23
- preventative24
- proscriptive25
- psychoactive29
- putrefactive26
- quantitative27
- recuperative23
- regenerative19
- remunerative21
- renunciative22
- reproductive24
- retrodictive20
- seronegative19
- seropositive19
- substitutive21
- sustentative18
- unattractive21
11 letter words
- abstractive21
- acetylative21
- acquisitive28
- adumbrative23
- adversative20
- affirmative24
- affricative24
- aggregative21
- alternative17
- appellative23
- applicative25
- arbitrative18
- argumentive22
- associative18
- assortative15
- attributive19
- carminative22
- circulative23
- colligative22
- combinative25
- commutative25
- comparative24
- competitive24
- conflictive26
- confutative23
- conjunctive33
- connotative20
- consecutive23
- consumptive26
- contractive22
- contrastive19
- cooperative21
- corporative21
- correlative19
- declarative20
- deformative22
- degradative19
- delineative18
- denigrative19
- descriptive22
- desiccative22
- designative19
- destructive20
- devastative20
- deverbative23
- diapositive19
- disjunctive30
- dispositive19
- dissipative19
- distinctive20
- distractive19
- duplicative24
- elaborative19
- eliminative20
- elucidative21
- enumerative20
- evaporative22
- exfoliative26
- exhortative24
- exonerative23
- expectative28
- explanative27
- explicative29
- explorative26
- facultative23
- germinative21
- gravitative21
- hyperactive25
- imaginative21
- implicative25
- inattentive17
- ineffective25
- informative22
- inoculative21
- inoperative19
- inquisitive26
- inscriptive22
- insensitive17
- insinuative18
- instigative18
- instinctive20
- instructive20
- integrative18
- interactive19
- irradiative16
- legislative19
- lubricative23
- maladaptive23
- meliorative19
- neuroactive20
- nociceptive25
- nonadaptive21
- nonadditive19
- noncreative20
- nonelective21
- nonnegative20
- nonpunitive22
- nonreactive20
- nonrelative18
- nuncupative25
10 letter words
- absolutive19
- absorptive20
- accusative21
- adjunctive29
- adsorptive18
- advocative22
- afflictive24
- annotative16
- appetitive20
- appointive21
- appositive20
- ascriptive20
- assaultive16
- assumptive21
- attractive17
- automotive18
- capacitive23
- cogitative19
- collective22
- combustive24
- completive24
- conceptive24
- concoctive24
- conductive23
- congestive20
- connective22
- constative18
- consultive20
- contortive18
- convective25
- copulative22
- corrective20
- corruptive21
- cumulative23
- cunctative22
- decorative18
- definitive19
- deflective22
- denotative16
- derivative19
- derogative17
- detonative16
- detractive18
- diminutive20
- disruptive19
- dominative19
- estimative17
- evacuative22
- evaluative20
- excitative24
- execrative24
- exhaustive24
- exhibitive26
- exploitive25
- expositive24
- extinctive25
- extractive24
- federative18
- figurative20
- generative17
- imperative20
- imputative21
- inchoative20
- incubative22
- indicative19
- indurative17
- infinitive19
- inflective22
- inflictive22
- inhibitive20
- initiative15
- injunctive29
- innovative20
- inspective21
- irrelative15
- irritative14
- lacerative18
- limitative18
- locomotive21
- meditative18
- mitigative19
- motivative21
- nominative19
- overactive21
- palliative19
- pejorative26
- pendentive20
- perceptive23
- perfective23
- permeative20
- preceptive23
- predictive21
- preemptive23
- preventive22
- productive22
- projective29
- protective20
- recitative17
- recreative17
- redemptive21
9 letter words
- acceptive22
- accretive19
- addictive18
- adductive19
- adjective26
- adjustive24
- advective21
- adventive19
- affective22
- agitative15
- assertive13
- attentive14
- bijective28
- bioactive19
- calmative20
- causative17
- cognitive19
- combative22
- deceptive20
- decretive17
- deductive19
- defective20
- depletive18
- detective17
- digestive16
- directive17
- educative18
- effective22
- emanative17
- emulative18
- evocative20
- exceptive26
- executive24
- expletive24
- extortive20
- exudative22
- factitive19
- forgetive18
- formative19
- fricative19
- hortative15
- imitative16
- impactive22
- incentive18
- inceptive20
- inductive19
- infective20
- ingestive16
- injective26
- intuitive15
- invective21
- inventive19
- irruptive17
- iterative13
- laudative16
- lucrative18
- mediative17
- narrative14
- nonnative16
- normative17
- nutritive15
- objective28
- operative16
- oxidative21
- partitive16
- placative20
- plaintive18
- pollutive19
- portative16
- primitive19
- privative20
- proactive19
- probative19
- promotive19
- purgative19
- radiative14
- receptive19
- reductive18
- rejective25
- resistive13
- retentive14
- secretive16
- seductive18
- selective17
- sensitive14
- summative20
- talkative18
- tentative14
- violative18
8 letter words
- ablative16
- abortive15
- adaptive16
- additive14
- adoptive16
- agentive15
- auditive14
- coactive18
- conative16
- creative15
- curative16
- denotive14
- dilative14
- dilutive15
- donative14
- durative14
- eductive17
- egestive14
- ejective24
- elective16
- enactive16
- erective15
- ergative14
- eruptive16
- exertive19
- fixative22
- fugitive18
- genitive15
- ideative13
- illative14
- inactive16
- laxative20
- lenitive14
- ligative15
- locative16
- monitive16
- mutative16
- negative15
- optative15
- orective15
- positive15
- punitive17
- putative16
- reactive15
- relative13
- rotative12
- sanative13
- sedative13
- sorptive15
- sportive15
- tractive15
- vegetive18
- vocative19
- volitive17
- vomitive19
7 letter words