| productive | (adjective) producing or capable of producing (especially abundantly) | - |
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| (adjective) having the ability to produce or originate | Synonyms: generative |
| (adjective) marked by great fruitfulness | Synonyms: fat, fertile, rich |
| (adjective) yielding positive results | - |
| prognosticative | (adjective) of or relating to prediction; having value for making predictions | Synonyms: predictive, prognostic |
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| progressive | (adjective) favoring or promoting progress | - |
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| (adjective) (of taxes) adjusted so that the rate increases as the amount of income increases | - |
| (adjective) advancing in severity | - |
| (adjective) gradually advancing in extent | - |
| (adjective) favoring or promoting reform (often by government action) | Synonyms: reform-minded, reformist |
| (adjective) (of a card game or a dance) involving a series of sections for which the participants successively change place or relative position | - |
| prohibitive | (adjective) tending to discourage (especially of prices) | Synonyms: prohibitory |
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| promotive | (adjective) tending to further or encourage | - |
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| propagative | (adjective) characterized by propagation or relating to propagation | - |
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| propitiative | (adjective) intended to reconcile or appease | Synonyms: propitiatory |
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| proprioceptive | (adjective) of or relating to proprioception | - |
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| propulsive | (adjective) having the power to propel | - |
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| (adjective) tending to or capable of propelling | Synonyms: propellant, propellent, propelling |
| prospective | (adjective) of or concerned with or related to the future | - |
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| protective | (adjective) intended or adapted to afford protection of some kind | - |
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| (adjective) showing care | - |
| (adjective) (usually followed by `of') solicitously caring or mindful | - |
| protrusive | (adjective) thrusting outward | - |
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| provocative | (adjective) serving or tending to provoke, excite, or stimulate; stimulating discussion or exciting controversy | - |
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| (adjective) intentionally arousing sexual desire | - |
| psychoactive | (adjective) affecting the mind or mood or other mental processes | Synonyms: psychotropic |
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| punitive | (adjective) inflicting punishment | Synonyms: punitory |
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| purgative | (adjective) strongly laxative | Synonyms: cathartic, evacuant |
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| purposive | (adjective) having or showing or acting with a purpose or design | - |
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| (adjective) having a purpose | Synonyms: goal-directed |
| putative | (adjective) purported; commonly put forth or accepted as true on inconclusive grounds | - |
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| putrefactive | (adjective) causing or promoting bacterial putrefaction | Synonyms: putrefacient |
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| qualitative | (adjective) involving distinctions based on qualities | - |
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| (adjective) relating to or involving comparisons based on qualities | - |
| quantitative | (adjective) expressible as a quantity or relating to or susceptible of measurement | - |
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| (adjective) (of verse) having a metric system based on relative duration of syllables | - |
| (adjective) relating to the measurement of quantity | - |
| radioactive | (adjective) exhibiting or caused by radioactivity | - |
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| radiosensitive | (adjective) sensitive to radiation | - |
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| ratiocinative | (adjective) based on exact thinking | - |
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| reactive | (adjective) participating readily in reactions | - |
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| (adjective) reacting to a stimulus | Synonyms: responsive |
| rebarbative | (adjective) serving or tending to repel | Synonyms: repellant, repellent |
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| received | (adjective) conforming to the established language usage of educated native speakers | Synonyms: standard |
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| (adjective) widely accepted as true or worthy | - |
| receptive | (adjective) ready or willing to receive favorably | Synonyms: open |
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| (adjective) able to absorb liquid (not repellent) | - |
| (adjective) of a nerve fiber or impulse originating outside and passing toward the central nervous system | Synonyms: centripetal, sensory |
| (adjective) open to arguments, ideas, or change | - |
| recessive | (adjective) (of genes) producing its characteristic phenotype only when its allele is identical | - |
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| (adjective) of or pertaining to a recession | Synonyms: recessionary |
| reciprocative | (adjective) moving alternately backward and forward | Synonyms: reciprocatory |
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| (adjective) given or done or owed to each other | Synonyms: reciprocatory |
| reclusive | (adjective) providing privacy or seclusion | Synonyms: cloistered, secluded, sequestered |
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| (adjective) withdrawn from society; seeking solitude | Synonyms: recluse, withdrawn |
| recollective | (adjective) good at remembering | Synonyms: long, retentive, tenacious |
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| reconstructive | (adjective) helping to restore to good condition | Synonyms: rehabilitative |
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| recriminative | (adjective) countering one charge with another | Synonyms: recriminatory |
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| recuperative | (adjective) promoting recuperation | Synonyms: restorative |
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| recursive | (adjective) of or relating to a recursion | - |
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| redemptive | (adjective) of or relating to or resulting in redemption | Synonyms: redemptional, redemptory |
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| (adjective) bringing about salvation or redemption from sin | Synonyms: redeeming, saving |
| reductive | (adjective) characterized by or causing diminution or curtailment | - |
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| reflective | (adjective) capable of physically reflecting light or sound | - |
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| (adjective) devoted to matters of the mind | - |
| (adjective) deeply or seriously thoughtful | Synonyms: brooding, broody, contemplative, meditative, musing, pensive, pondering, ruminative |
| reflexive | (adjective) referring back to itself | Synonyms: self-referent |
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| (adjective) without volition or conscious control | Synonyms: automatic, reflex |
| reformative | (adjective) tending to reform | Synonyms: reformatory |
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| refractive | (adjective) of or relating to or capable of refraction | Synonyms: refractile |
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| (adjective) capable of changing the direction (of a light or sound wave) | Synonyms: deflective |
| regressive | (adjective) opposing progress; returning to a former less advanced state | - |
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| (adjective) (of taxes) adjusted so that the rate decreases as the amount of income increases | - |
| regulative | (adjective) restricting according to rules or principles | Synonyms: regulatory |
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| rehabilitative | (adjective) designed to accomplish rehabilitation | - |
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| (adjective) helping to restore to good condition | Synonyms: reconstructive |
| reiterative | (adjective) marked by iteration | Synonyms: iterative |
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| rejective | (adjective) rejecting or tending to reject | - |
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| relative | (adjective) estimated by comparison; not absolute or complete | Synonyms: comparative |
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| (adjective) properly related in size or degree or other measurable characteristics; usually followed by `to' | Synonyms: proportional |
| remunerative | (adjective) for which money is paid | Synonyms: compensable, paying, salaried, stipendiary |
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| (adjective) producing a sizeable profit | Synonyms: lucrative, moneymaking |
| renunciative | (adjective) used especially of behavior | Synonyms: renunciant, self-abnegating, self-denying |
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| repetitive | (adjective) characterized by repetition | Synonyms: repetitious |
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| (adjective) repetitive and persistent | Synonyms: insistent |
| representative | (adjective) standing for something else | - |
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| (adjective) being or characteristic of government by representation in which citizens exercise power through elected officers and representatives | - |
| (adjective) serving to represent or typify | - |
| repressive | (adjective) restrictive of action | Synonyms: inhibitory, repressing |
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| reproductive | (adjective) producing new life or offspring | Synonyms: generative, procreative |
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| repudiative | (adjective) rejecting emphatically; e.g. refusing to pay or disowning | - |
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| repulsive | (adjective) possessing the ability to repel | - |
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| (adjective) offensive to the mind | Synonyms: abhorrent, detestable, obscene, repugnant |
| (adjective) so extremely ugly as to be terrifying | Synonyms: hideous |
| resistive | (adjective) exhibiting or relating to electrical resistance | - |
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| (adjective) disposed to or engaged in defiance of established authority | Synonyms: insubordinate, resistant |
| respective | (adjective) considered individually | Synonyms: several, various |
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| responsive | (adjective) readily reacting or replying to people or events or stimuli; showing emotion | - |
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| (adjective) containing or using responses; alternating | Synonyms: antiphonal |
| (adjective) reacting to a stimulus | Synonyms: reactive |
| restive | (adjective) impatient especially under restriction or delay | - |
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| (adjective) being in a tense state | Synonyms: edgy, high-strung, highly strung, jittery, jumpy, nervy, overstrung, uptight |
| restorative | (adjective) promoting recuperation | Synonyms: recuperative |
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| (adjective) tending to impart new life and vigor to | Synonyms: renewing, revitalising, revitalizing, reviving |
| restrictive | (adjective) serving to restrict | - |
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| (adjective) (of tariff) protective of national interests by restricting imports | - |
| retaliative | (adjective) of or relating to or having the nature of retribution | Synonyms: retaliatory, retributive, retributory, vindicatory |
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| retentive | (adjective) good at remembering | Synonyms: long, recollective, tenacious |
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| (adjective) having the capacity to retain something | - |
| (adjective) having the power, capacity, or quality of retaining water | - |
| retributive | (adjective) given or inflicted in requital according to merits or deserts | Synonyms: retributory, vindicatory |
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| (adjective) of or relating to or having the nature of retribution | Synonyms: retaliative, retaliatory, retributory, vindicatory |
| retroactive | (adjective) descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously | - |
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| (adjective) affecting things past | Synonyms: ex post facto, retro |
| retrogressive | (adjective) going from better to worse | Synonyms: retrograde |
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| retrospective | (adjective) concerned with or related to the past | - |
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| reverberative | (adjective) characterized by resonance | Synonyms: resonant, resonating, resounding, reverberating |
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| reversive | (adjective) tending to be turned back | Synonyms: returning |
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| revived | (adjective) restored to consciousness or life or vigor | - |
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| (adjective) given fresh life or vigor or spirit | Synonyms: reanimated |
| riveting | (adjective) capable of arousing and holding the attention | Synonyms: absorbing, engrossing, fascinating, gripping |
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| ruminative | (adjective) deeply or seriously thoughtful | Synonyms: brooding, broody, contemplative, meditative, musing, pensive, pondering, reflective |
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| sanative | (adjective) tending to cure or restore to health | Synonyms: alterative, curative, healing, remedial, therapeutic |
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| sanctionative | (adjective) implying sanction or serving to sanction | Synonyms: sanctioning |
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| scrivened | (adjective) copied in handwriting | - |
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| secretive | (adjective) inclined to secrecy or reticence about divulging information | Synonyms: close, closelipped, closemouthed, tightlipped |
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| sedative | (adjective) tending to soothe or tranquilize | Synonyms: ataractic, ataraxic, tranquilising, tranquilizing, tranquillising, tranquillizing |
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| seductive | (adjective) tending to entice into a desired action or state | - |
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| selective | (adjective) tending to select; characterized by careful choice | - |
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| (adjective) characterized by very careful or fastidious selection | - |
| semiconductive | (adjective) having characteristics of a semiconductor; that is having electrical conductivity greater than insulators but less than good conductors | Synonyms: semiconducting |
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| sensitive | (adjective) responsive to physical stimuli | - |
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| (adjective) being susceptible to the attitudes, feelings, or circumstances of others | - |
| (adjective) able to feel or perceive | Synonyms: sensible |
| (adjective) of or pertaining to classified information or matters affecting national security | - |
| (adjective) hurting | Synonyms: raw, sore, tender |
| separative | (adjective) (of a word) referring singly and without exception to the members of a group | - |
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| (adjective) serving to separate or divide into parts | Synonyms: partitive |
| (adjective) (used of an accent in Hebrew orthography) indicating that the word marked is separated to a greater or lesser degree rhythmically and grammatically from the word that follows it | - |
| shivering | (adjective) vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze | Synonyms: shaky, trembling |
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| shivery | (adjective) provoking fear or terror | Synonyms: chilling, scary, shuddery |
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| (adjective) cold enough to cause shivers | - |
| shriveled | (adjective) reduced in efficacy or vitality or intensity | Synonyms: shrivelled, shrunken |
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| (adjective) (used especially of vegetation) having lost all moisture | Synonyms: dried-up, sear, sere, shrivelled, withered |
| (adjective) lean and wrinkled by shrinkage as from age or illness | Synonyms: shrivelled, shrunken, withered, wizen, wizened |
| shrivelled | (adjective) reduced in efficacy or vitality or intensity | Synonyms: shriveled, shrunken |
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| (adjective) (used especially of vegetation) having lost all moisture | Synonyms: dried-up, sear, sere, shriveled, withered |
| (adjective) lean and wrinkled by shrinkage as from age or illness | Synonyms: shriveled, shrunken, withered, wizen, wizened |
| significative | (adjective) (usually followed by `of') pointing out or revealing clearly | Synonyms: indicative, indicatory, revelatory, suggestive |
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| slivery | (adjective) resembling or consisting of or embedded with long slender fragments of (especially) wood having sharp points | Synonyms: splintery |
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| speculative | (adjective) showing curiosity | Synonyms: inquisitive, questioning, wondering |
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| (adjective) not based on fact or investigation | Synonyms: notional |
| (adjective) not financially safe or secure | Synonyms: bad, high-risk, risky |
| sportive | (adjective) relating to or interested in sports | - |
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| (adjective) given to merry frolicking | Synonyms: coltish, frolicky, frolicsome, rollicking |
| stative | (adjective) (used of verbs (e.g. `be' or `own') and most participial adjectives) expressing existence or a state rather than an action | - |
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| sternutative | (adjective) causing sneezing | Synonyms: sternutatory |
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| stimulative | (adjective) capable of arousing or accelerating physiological or psychological activity or response by a chemical agent | - |
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| subjective | (adjective) taking place within the mind and modified by individual bias | - |
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| (adjective) of a mental act performed entirely within the mind | Synonyms: immanent |
| subjunctive | (adjective) relating to a mood of verbs | - |
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| submissive | (adjective) inclined or willing to submit to orders or wishes of others or showing such inclination | - |
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| (adjective) abjectly submissive; characteristic of a slave or servant | Synonyms: slavish, subservient |
| subordinative | (adjective) serving to connect a subordinate clause to a main clause | Synonyms: subordinating |
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| substantiative | (adjective) serving to support or corroborate | Synonyms: collateral, confirmative, confirmatory, confirming, corroborative, corroboratory, substantiating, validating, validatory, verificatory, verifying |
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| substantive | (adjective) defining rights and duties as opposed to giving the rules by which rights and duties are established | Synonyms: essential |
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| (adjective) of or relating to the real nature or essential elements of something | Synonyms: substantial |
| (adjective) being on topic and prompting thought | Synonyms: meaty |