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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | untiring |
| Synonyms: | active, assiduous, bound and determined, dead set on, determined, diligent, dogged, energetic, hell-bent, industrious, inexhaustible, ironclad, nose to grindstone, painstaking, patient, persevering, persistent, pertinacious, relentless, sedulous, steadfast, stop at nothing, strenuous, tireless, unfaltering, unflagging, unflinching, unremitting, unwavering, unwearied, unwearying, vigorous |
| Antonyms: | fatigued, tired, weary |
| Main Entry: | ceaseless |
| Part of Speech: | adjective |
| Definition: | never-ending |
| Synonyms: | amaranthine, constant, continual, continuous, day and night, endless, eternal, everlasting, incessant, indefatigable, interminable, nonstop, on a treadmill, perennial, perpetual, round the clock, unceasing, unending, uninterrupted, unremitting, untiring, world-without-end |
| Antonyms: | ceasing, completed, concluded, ending, finished, infrequent, irregular, occasional |
| Main Entry: | diligent |
| Part of Speech: | adjective |
| Definition: | persevering, hard-working |
| Synonyms: | active, assiduous, attentive, busy, careful, conscientious, constant, eager, eager beaver, earnest, grind*, indefatigable, industrious, laborious, occupied, operose, painstaking, persistent, persisting, pertinacious, plugging, sedulous, steadfast, studious, tireless, unflagging, unrelenting, untiring |
| Antonyms: | inactive, indifferent, languid, lazy, lethargic, negligent |
* = informal/non-formal usage
| Main Entry: | dogged |
| Part of Speech: | adjective |
| Definition: | determined, persistent |
| Synonyms: | adamant, bullheaded, firm, hanging tough, hard-nosed, hardheaded, indefatigable, inexorable, inflexible, insistent, mulish, obdurate, obstinate, perseverant, perseverative, persevering, pertinacious, pigheaded, relentless, resolute, rigid, single-minded, staunch, steadfast, steady, stubborn, tenacious, tough nut, unbending, unflagging, unshakable, unyielding |
| Antonyms: | indifferent, irresolute, undetermined, yielding |
| Main Entry: | energetic |
| Part of Speech: | adjective |
| Definition: | full of life; forceful |
| Synonyms: | active, aggressive, animated, ball of fire, breezy, brisk, demoniac, driving, dynamic, enterprising, forcible, fresh, hardy, high-powered, indefatigable, industrious, kinetic, lively, lusty, peppy, potent, powerful, red-blooded, rugged, snappy, spirited, sprightly, spry, stalwart, strenuous, strong, sturdy, tireless, tough, unflagging, untiring, vigorous, vital, vivacious, zippy |
| Antonyms: | idle, inactive, lazy, lethargic, lifeless, slow, sluggish, tired |
| Main Entry: | hardy |
| Part of Speech: | adjective |
| Definition: | strong, tough |
| Synonyms: | able, able-bodied, acclimatized, brawny, burly, capable, enduring, firm, fit, fresh, hale, hardened, healthy, hearty, hefty, in fine fettle, in good condition, in good shape, indefatigable, inured, lusty, mighty, muscular, physically fit, powerful, resistant, robust, rugged, seasoned, solid, sound, stalwart, staunch, stout, sturdy, substantial, tenacious, unflagging, vigorous, well |
| Notes: | hardy means 'strong, durable, capable' - while hearty means 'strong' in a more active way as in hearty appetite, applause, meal |
| Antonyms: | feeble, infirm, invalid, sick, tender, unhealthy, weak |
| Main Entry: | inexhaustible |
| Part of Speech: | adjective |
| Definition: | tireless |
| Synonyms: | enduring, indefatigable, unflagging, untiring, unwearying, vigorous |
| Main Entry: | laborious |
| Part of Speech: | adjective |
| Definition: | hardworking |
| Synonyms: | active, assiduous, diligent, indefatigable, industrious, operose, painstaking, persevering, sedulous, tireless, unflagging |
| Antonyms: | idle, lackadaisical, lazy, reticent |
| Main Entry: | persistent |
| Part of Speech: | adjective |
| Definition: | determined; continuous |
| Synonyms: | assiduous, bound, bound and determined, bulldogged, constant, continual, dogged, endless, enduring, firm, fixed, immovable, in for long haul, incessant, indefatigable, insistent, interminable, like bad penny, never-ending, obdurate, obstinate, perpetual, perseverant, persevering, persisting, pertinacious, relentless, repeated, resolute, steadfast, steady, sticky*, stubborn, tenacious, tireless, unflagging, unrelenting, unremitting, unshakable |
| Antonyms: | lazy, relenting, surrendering, yielding |
* = informal/non-formal usage
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
