| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | existent |
| Synonyms: | alive, animate, aware, breathing, conscious, living, vital |
| Antonyms: | dead, non-existent |
| Main Entry: | actual |
| Part of Speech: | adjective |
| Definition: | existing at the present time |
| Synonyms: | current, exact, existent, extant, live, living, original, prevailing |
| Antonyms: | hypothetical, imaginary, nominal, past, reputed, theoretical, unreal |
| Main Entry: | alive |
| Part of Speech: | adjective |
| Definition: | being animately existent |
| Synonyms: | animate, around, awake, breathing, cognizant, conscious, dynamic, existing, extant, functioning, growing, knowing, live, living, mortal, operative, running, subsisting, viable, vital, working, zoetic |
| Antonyms: | dead, deceased, inanimate, lifeless |
| Main Entry: | animate |
| Part of Speech: | adjective |
| Definition: | alive |
| Synonyms: | breathing, live, living, mortal, moving, viable, vital, zoetic |
| Antonyms: | dead |
| Main Entry: | effective |
| Part of Speech: | adjective |
| Definition: | productive, persuasive |
| Synonyms: | able, active, adequate, capable, cogent, compelling, competent, convincing, direct, effectual, efficacious, efficient, emphatic, energetic, forceful, forcible, having lead in pencil, impressive, live, moving, on the ball, operative, playing hardball, potent, powerful, powerhouse, practical, producing, resultant, serviceable, serving, sound, striking, sufficient, telling, trenchant, useful, valid, virtuous, wicked*, yielding |
| Notes: | effective means 'having a (desired) result or effect,' effectual is 'succeeding in producing a desired result or effect,' and efficacious means the same as effectual as well as 'serving as an effective solution or remedy' |
| Antonyms: | fruitless, impotent, incapable, ineffective, unproductive, useless, weak |
| Main Entry: | immediate |
| Part of Speech: | adjective |
| Definition: | instantaneous; without delay |
| Synonyms: | actual, at once, at present time, at this moment, critical, current, existing, extant, first, hair-trigger, instant, live, next, now, on hand, paramount, present, pressing, prompt, up-to-date*, urgent |
| Antonyms: | eventually, later, never |
| Main Entry: | living |
| Part of Speech: | adjective |
| Definition: | existing, active |
| Synonyms: | alert, alive, animated, around, awake, breathing, brisk, contemporary, continuing, current, developing, dynamic, existent, extant, in use, live, lively, ongoing, operative, persisting, strong, subsisting, ticking, vigorous, vital, warm |
| Antonyms: | dead, inactive |
| Main Entry: | operative |
| Part of Speech: | adjective |
| Definition: | active, functioning; influential |
| Synonyms: | accessible, alive, crucial, current, dynamic, effective, efficient, employable, functional, important, in force, in operation, indicative, key, live, open, operational, practicable, relevant, running, serviceable, significant, standing, usable, workable, working |
| Antonyms: | inactive, ineffective, ineffectual, inoperative, unfunctional, unworking, useless, worthless |
| Main Entry: | organic |
| Part of Speech: | adjective |
| Definition: | basic, natural |
| Synonyms: | amoebic, anatomical, animate, basal, biological, biotic, cellular, constitutional, elemental, essential, fundamental, inherent, innate, integral, live, living, necessary, nuclear, original, plasmic, primary, prime, primitive, principal, structural, vital |
| Notes: | if a compound contains carbon, it is organic; no carbon indicates inorganic |
| Antonyms: | inorganic, man-made, unnatural |