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efficient - 20 thesaurus results
| Main Entry: | efficient |
| Part of Speech: | adjective |
| Definition: | adept, effective |
| Synonyms: | able, accomplished, active, adapted, adequate, apt, businesslike, capable, clever, competent, conducive, decisive, deft, dynamic, economic, economical, effectual, efficacious, energetic, experienced, expert, fitted, handy, masterly, organized, potent, powerful, practiced, productive, proficient, profitable, qualified, ready, saving, shrewd, skilled, skillful, systematic, talented, tough, useful, valuable, virtuous, equal to, familiar with, good at, good for, well-organized |
| Antonyms: | helpless, impotent, incompetent, ineffective, inefficient, powerless, unable, weak |
| Main Entry: | capable |
| Part of Speech: | adjective |
| Definition: | able to perform |
| Synonyms: | able, accomplished, adapted, adept, adequate, apt, au fait, clever, competent, dynamite, efficient, experienced, fitted, gifted, good, green thumb, intelligent, masterly, old hand*, old-timer*, on the ball*, proficient, proper, qualified, skillful, suited, talented, up*, veteran, fireball, has what it takes, having know-how, having the goods, having the right stuff, knowing the ropes, knowing the score, like a one-man band, like a pistol, there, up to it, up to snuff, up to speed |
| Notes: | able is having the necessary power to accomplish something while capable means having the potential to accomplish something |
| Antonyms: | impotent, incapable, incompetent, inept, unable, unskilled, unskillful |
* = informal/non-formal usage
| Main Entry: | competent |
| Part of Speech: | adjective |
| Definition: | able |
| Synonyms: | adapted, adequate, all around, appropriate, au fait, being a pistol, capable, clever, complete, crisp, decent, dynamite, efficient, endowed, enough, equal, fireball, fit, fool, good, know ins and outs, know one's business, know one's stuff, know the answers, know the ropes, know the score, no slouch, on the ball*, paid one's dues, pertinent, polished, proficient, qualified, satisfactory, savvy, skilled, sufficient, suitable, there, up to it, up to snuff, up to speed, wicked* |
| Antonyms: | inadequate, incapable, incompetent, inefficient, inept, unable |
* = informal/non-formal usage
| Main Entry: | effectual |
| Part of Speech: | adjective |
| Definition: | influential; authoritative |
| Synonyms: | adequate, binding, capable, conclusive, decisive, effective, efficacious, efficient, forcible, lawful, legal, licit, potent, powerful, practicable, productive, qualified, serviceable, sound, strong, successful, telling, useful, valid, virtuous, workable, accomplishing, achieving, determinative, effecting, fulfilling, in force |
| Antonyms: | impotent, incapable, ineffectual, unproductive, unsuccessful, useless, weak |
| Main Entry: | expeditious |
| Part of Speech: | adjective |
| Definition: | immediate, speedy |
| Synonyms: | active, alert, breakneck, brisk, diligent, effective, effectual, efficient, fast, fleet, hasty, instant, nimble, prompt, punctual, quick, rapid, ready, swift |
| Antonyms: | retarded, slow, pokey |
| Main Entry: | forcible |
| Part of Speech: | adjective |
| Definition: | powerful, aggressive |
| Synonyms: | active, armed, assertive, cogent, compelling, compulsory, drastic, effective, efficient, energetic, forceful, impressive, intense, mighty, militant, persuasive, potent, strong, telling, valid, vehement, vigorous, violent, weighty, coercive, puissant |
| Antonyms: | weak, nonaggressive |
| Main Entry: | infallible |
| Part of Speech: | adjective |
| Definition: | unerring, dependable |
| Synonyms: | acceptable, accurate, agreeable, authoritative, certain, correct, effective, effectual, efficacious, efficient, exact, faultless, flawless, foolproof, handy, helpful, impeccable, incontrovertible, omniscient, perfect, positive, reliable, satisfactory, satisfying, sure, true, trustworthy, unbeatable, unfailing, unimpeachable, unquestionable, useful, apodictic, inerrable, inerrant, surefire, undeceivable |
| Antonyms: | erring, fallible, faulty, imperfect |
| Main Entry: | methodical/methodic |
| Part of Speech: | adjective |
| Definition: | organized, precise |
| Synonyms: | analytical, businesslike, by the numbers, careful, cut-and-dried*, deliberate, efficient, exact, fixed, framed, logical, meticulous, neat, ordered, orderly, painstaking, planned, regular, scrupulous, systematic, tidy, together, all together, by the book, disciplined, in a groove, methodized, set-up, structured, well-regulated |
| Antonyms: | confused, disorderly, disorganized, imprecise, unmethodical/unmethodic |
* = informal/non-formal usage
| Main Entry: | operative |
| Part of Speech: | adjective |
| Definition: | active, functioning; influential |
| Synonyms: | accessible, alive, crucial, current, dynamic, effective, efficient, functional, important, indicative, key, live, open, operational, practicable, relevant, running, serviceable, significant, standing, usable, workable, working, employable, in force, in operation |
| Antonyms: | inactive, ineffective, ineffectual, inoperative, useless, worthless, unfunctional, unworking |
| Main Entry: | persuasive |
| Part of Speech: | adjective |
| Definition: | effective, influential |
| Synonyms: | alluring, cogent, compelling, conclusive, convincing, credible, effectual, efficacious, efficient, eloquent, energetic, forceful, forcible, impressive, inspiring, logical, moving, plausible, pointed, potent, powerful, seductive, slick, smooth, sound, stimulating, stringent, strong, telling, touching, unctuous, valid, weighty, winning, actuating, convictive, enticing, impelling, inducing, inveigling, luring, swaying, wheedling |
| Antonyms: | discouraging, ineffective, ineffectual, dampening, disheartening, dissuasive |
| Main Entry: | pragmatic |
| Part of Speech: | adjective |
| Definition: | sensible |
| Synonyms: | businesslike, down-to-earth, efficient, hard, hard-boiled*, hardheaded*, logical, matter-of-fact, practical, realistic, sober, utilitarian, commonsensical, unidealistic |
| Antonyms: | idealistic, unreasonable |
* = informal/non-formal usage
| Main Entry: | professional |
| Part of Speech: | adjective |
| Definition: | skilled, trained |
| Synonyms: | able, ace, acknowledged, adept, competent, crackerjack*, efficient, experienced, expert, finished, knowing one's stuff, known, learned, licensed, on the ball*, polished, practiced, proficient, qualified, sharp, skillful, slick*, there, up to speed, well-qualified |
| Antonyms: | amateur, rookie, unprofessional, unskilled, untrained |
* = informal/non-formal usage
| Main Entry: | proficient |
| Part of Speech: | adjective |
| Definition: | able, skilled |
| Synonyms: | accomplished, adept, apt, capable, clever, competent, consummate, conversant, crack*, crackerjack*, effective, effectual, efficient, experienced, expert, finished, gifted, pro, qualified, savvy*, sharp, skillful, slick*, talented, trained, versed, whiz*, with it*, drilled, exercised, on the beam, phenom, up to speed |
| Antonyms: | clumsy, incompetent, inept, unable, unskilled |
* = informal/non-formal usage
| Main Entry: | prompt |
| Part of Speech: | adjective |
| Definition: | early, responsive |
| Synonyms: | alert, apt, brisk, eager, efficient, expeditious, immediate, instant, instantaneous, on the ball*, on the nose*, on time, precise, punctual, quick, rapid, ready, smart, speedy, swift, timely, vigilant, watchful, wide-awake, willing, on the button, on the dot, unhesitating |
| Antonyms: | late, negligent, slow, tardy |
* = informal/non-formal usage
| Main Entry: | self-sufficient |
| Part of Speech: | adjective |
| Definition: | able to take care of oneself |
| Synonyms: | arrogant, closed, competent, conceited, confident, doing one's own thing, efficient, egotistic, haughty, independent, individual, on one's own, out for number one, self-confident, self-dependent, self-sufficing, self-supported, self-supporting, self-sustained, self-sustaining, smug, unit |
| Antonyms: | incapable, needy, unable |
| Main Entry: | serviceable |
| Part of Speech: | adjective |
| Definition: | useful, functional |
| Synonyms: | advantageous, beneficial, convenient, dependable, durable, efficient, handy, helpful, invaluable, operative, practical, profitable, usable, utilitarian, valuable, aiding, assistive, hard-wearing, utile |
| Antonyms: | unprofitable, useless, weak, worthless, unhelpful, unserviceable |
| Main Entry: | systematic |
| Part of Speech: | adjective |
| Definition: | orderly |
| Synonyms: | analytical, businesslike, complete, efficient, logical, methodical, ordered, organized, out-and-out*, precise, regular, standardized, thoroughgoing, arranged, methodic, systematized, well-ordered |
| Antonyms: | chaotic, confused, disorderly, mixed up, unmethodical, unsystematic |
* = informal/non-formal usage
| Main Entry: | utilitarian |
| Part of Speech: | adjective |
| Definition: | practical |
| Synonyms: | down-to-earth, effective, efficient, functional, hard, hardheaded, matter-of-fact, nuts and bolts*, pragmatic, realistic, sensible, serviceable, useful, commonsensical, pragmatical, unidealistic, unromantic |
| Antonyms: | impractical, unnecessary |
* = informal/non-formal usage
| Main Entry: | valid |
| Part of Speech: | adjective |
| Definition: | right, genuine |
| Synonyms: | accurate, authentic, authoritative, binding, bona fide, cogent, compelling, conclusive, confirmed, convincing, credible, efficacious, efficient, good, irrefutable, just, kosher*, lawful, legal, legitimate, logical, official, original, persuasive, potent, powerful, pure, solid, sound, stringent, strong, substantial, telling, tested, true, trustworthy, ultimate, unadulterated, weighty, well-founded, well-grounded, attested, determinative, in force, legit, proven, unanswerable, uncorrupted |
| Antonyms: | invalid, unacceptable, unreal, unsound, wrong |
* = informal/non-formal usage
| Main Entry: | vigorous |
| Part of Speech: | adjective |
| Definition: | energetic, powerful |
| Synonyms: | active, athletic, brisk, dashing, driving, dynamic, effective, efficient, enterprising, exuberant, flourishing, forceful, forcible, hale, hardy, healthy, hearty, intense, lively, lusty, mettlesome, peppy, persuasive, potent, robust, rugged, snappy, sound, spanking, spirited, steamroller, strapping, strenuous, strong, sturdy, tough, vital, zealous, zippy*, ball of fire, bouncing, hard-driving, red-blooded*, strong as an ox, take-charge, take-over |
| Antonyms: | enervated, idle, impotent, inactive, lethargic, weak |
* = informal/non-formal usage
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Copyright © 2009, Dictionary.com, LLC. All rights reserved.
