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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | merciless, cruel |
| Synonyms: | grim, inexorable, inflexible, intractable, ironfisted, mortal, pitiless, rancorous, relentless, remorseless, ruthless, unappeasable, unbending, uncompromising, unflinching, unforgiving, unrelenting, unyielding, vindictive |
| Notes: | placable is 'of a tolerant nature' - the opposite of implacable |
| Antonyms: | kind, merciful, nice, placable |
| Main Entry: | ferocious |
| Part of Speech: | adjective |
| Definition: | violent, barbaric |
| Synonyms: | barbarous, bloodthirsty, brutal, brutish, cruel, fell, feral, fierce, frightful, grim, implacable, inhuman, inhumane, lupine, merciless, murderous, pitiless, predatory, rapacious, ravening, ravenous, relentless, ruthless, sanguinary, savage, tigerish, truculent, unmerciful, unrestrained, untamed, vehement, vicious, voracious, wild, wolfish |
| Antonyms: | gentle, innocent, kind, mild, nonviolent, tame, tender |
| Main Entry: | grim |
| Part of Speech: | adjective |
| Definition: | hopeless, horrible in manner, appearance |
| Synonyms: | austere, barbarous, bleak, cantankerous, churlish, crabbed, cruel, crusty, dogged, ferocious, fierce, forbidding, foreboding, formidable, frightful, funereal, ghastly, gloomy, glowering, glum, grisly, grouchy, gruesome, grumpy*, harsh, hideous, horrid, implacable, inexorable, intractable, merciless, morose, ominous, relentless, resolute, ruthless, scowling, severe, shocking, sinister, somber, sour, splenetic, stern, stubborn, sulky, sullen, surly, terrible, truculent, unrelenting, unyielding |
| Antonyms: | bright, cheerful, happy, hopeful, joyful, sunny |
* = informal/non-formal usage
| Main Entry: | inexorable |
| Part of Speech: | adjective |
| Definition: | cruel, pitiless |
| Synonyms: | adamant, adamantine, bound, bound and determined, compulsory, dead set on, dogged, hard, harsh, hell bent on, immobile, immovable, implacable, ineluctable, inescapable, inflexible, ironclad, like death and taxes, locked in, mean business, merciless, necessary, no going back, obdurate, obstinate, relentless, remorseless, resolute, rigid, set in stone, severe, single-minded, stubborn, unappeasable, unbending, uncompromising, unmovable, unrelenting, unyielding |
| Antonyms: | flexible, lenient, merciful, remorseful, yielding |
| Main Entry: | inflexible |
| Part of Speech: | adjective |
| Definition: | stubborn |
| Synonyms: | adamant, adamantine, determined, dogged, dyed-in-the-wool, firm, fixed, hard, hard-and-fast, immovable, immutable, implacable, indomitable, inexorable, intractable, iron, obdurate, obstinate, relentless, resolute, rigid, rigorous, set, set in one's ways, single-minded, stand one's ground, staunch, steadfast, steely, stiff, strict, stringent, unadaptable, unbending, unchangeable, uncompliant, uncompromising, unrelenting, unswayable, unyielding |
| Antonyms: | flexible, reasonable, willing, yielding |
| Main Entry: | inhuman/inhumane |
| Part of Speech: | adjective |
| Definition: | animal, savage |
| Synonyms: | barbaric, barbarous, bestial, brutal, cannibalistic, cold-blooded, cruel, devilish, diabolical, fell, ferocious, fiendish, fierce, grim, hateful, heartless, implacable, malicious, malign, malignant, mean, merciless, pitiless, relentless, remorseless, ruthless, truculent, uncompassionate, unfeeling, unkind, unrelenting, unsympathetic, vicious |
| Antonyms: | animate, human/humane, sensate |
| Main Entry: | iron |
| Part of Speech: | adjective |
| Definition: | hard, tough; inflexible |
| Synonyms: | adamant, adamantine, cruel, dense, ferric, ferrous, firm, heavy, immovable, implacable, indomitable, inexorable, insensible, obdurate, relentless, rigid, robust, steel, steely, strong, stubborn, thick, unbending, unyielding |
| Notes: | ferrum is the Latin name for iron, from which its chemical symbol Fe is derived; iron exists in various states of impurity and it is processed to produce cast iron, wrought iron, etc. and steel (steel is iron to which carbon and other things have been added) |
| Antonyms: | flexible, soft, weak |
| Main Entry: | irreconcilable |
| Part of Speech: | adjective |
| Definition: | hostile, conflicting |
| Synonyms: | clashing, diametrically opposed, discordant, discrepant, dissonant, hard-line, implacable, incompatible, incongruous, inconsistent, inexorable, inflexible, inharmonious, intransigent, opposed, reluctant, unappeasable, uncompromising, unfriendly |
| Antonyms: | compromising, friendly, reconcilable |
| Main Entry: | merciless |
| Part of Speech: | adjective |
| Definition: | mean, heartless |
| Synonyms: | barbarous, callous, compassionless, cruel, cutthroat, dog-eat-dog, fierce, gratuitous, grim, hard, hardhearted, harsh, hatchet job, having a killer instinct, implacable, inexorable, inhumane, iron-fisted, mean machine, mortal, pitiless, relentless, ruthless, severe, unappeasable, uncalled-for, unfeeling, unflinching, unforgiving, unmerciful, unpitying, unrelenting, unsparing, unsympathetic, unyielding, wanton |
| Antonyms: | giving, kind, merciful, nice, sparing, sympathetic |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
