| Main Entry: | unassailable |
| Part of Speech: | adjective |
| Definition: | certain |
Synonyms: |
absolute, ascertained, authoritative, clear, conclusive, confirmable, definite, demonstrable, destined, determined, establishable, evident, firm, fixed, genuine, guaranteed, hard, having down pat, in the bag, inarguable, incontestable, incontrovertible, indisputable, indubitable, infallible, irrefutable, known, on ice, plain, positive, predestined, provable, real, reliable, safe, salted away, set, sound, supreme, sure, sure thing, true, trustworthy, unambiguous, undeniable, undisputable, undoubted, unequivocal, unerring, unmistakable, unquestionable, verifiable |
| Main Entry: | airtight |
| Part of Speech: | adjective |
| Definition: | certain |
Synonyms: |
incontestable, indisputable, invulnerable, irrefutable, unassailable |
Antonyms: |
possible, questionable, uncertain |
| Main Entry: | foolproof |
| Part of Speech: | adjective |
| Definition: | infallible |
Synonyms: |
certain, dependable, fail-safe, faultless, flawless, goofproof, guaranteed, idiot-proof, never-failing, perfect, reliable, safe, sure, sure-fire, tested, tried, unassailable, unerring, unfailing |
| Main Entry: | impregnable |
| Part of Speech: | adjective |
| Definition: | unyielding |
Synonyms: |
firm, fortified, impenetrable, indestructible, invincible, invulnerable, secure, solid, strong, unassailable |
| Main Entry: | inalienable |
| Part of Speech: | adjective |
| Definition: | absolute, inherent |
Synonyms: |
basic, entailed, inbred, inviolable, natural, nonnegotiable, nontransferable, sacrosanct, unassailable, untransferable |
Antonyms: |
acquired, alienable, changeable, impermanent, transitory |
| Main Entry: | indisputable |
| Part of Speech: | adjective |
| Definition: | beyond doubt |
Synonyms: |
absolute, accurate, actual, certain, double-checked, evident, incontestable, incontrovertible, indubitable, irrefutable, no ifs ands or buts about it, no mistake, open and shut, positive, real, sure, that's a fact, true, unassailable, undeniable, undoubted, unfabled, unquestionable, veridical |
Antonyms: |
disputable, doubtful, dubious, indefinite, questionable, refutable, uncertain, unreliable, unsure, vague |
| Main Entry: | indomitable |
| Part of Speech: | adjective |
| Definition: | steadfast, unyielding |
Synonyms: |
dogged, impassable, impregnable, insuperable, insurmountable, invincible, invulnerable, obstinate, pertinacious, resolute, ruthless, staunch, stubborn, unassailable, unbeatable, unconquerable, undefeatable, unflinching, willful |
Antonyms: |
beatable, conquerable, unstable, weak, yielding |
| Main Entry: | invincible |
| Part of Speech: | adjective |
| Definition: | indestructible |
Synonyms: |
bulletproof, impassable, impregnable, indomitable, insuperable, inviolable, invulnerable, irresistible, powerful, strong, unassailable, unattackable, unbeatable, unconquerable, undefeatable, unsurmountable, untouchable, unyielding |
Antonyms: |
beatable, breakable, conquerable, destructible |
| Main Entry: | irrefutable |
| Part of Speech: | adjective |
| Definition: | beyond question |
Synonyms: |
accurate, apodictic, can bet on it, certain, double-checked, evident, final, inarguable, incontestable, incontrovertible, indisputable, indubitable, invincible, ironclad, irrebuttable, irrefragable, irresistible, nof ifs ands or buts, obvious, odds-on, positive, proven, set, sure, unanswerable, unassailable, undeniable, unimpeachable, unquestionable |
Antonyms: |
doubtful, dubious, questionable, refutable, uncertain |
| Main Entry: | safe |
| Part of Speech: | adjective |
| Definition: | free from harm |
Synonyms: |
buttoned up, cherished, free from danger, guarded, home-free, impervious, impregnable, in safety, intact, inviolable, invulnerable, maintained, okay*, out of danger, out of harm's way, preserved, protected, safe and sound, safeguarded, secure, sheltered, shielded, sitting pretty, snug, tended, unassailable, undamaged, under lock and key, under one's wing, unharmed, unhurt, uninjured, unmolested, unscathed, unthreatened, vindicated, watched |
Antonyms: |
exposed, unguarded, unprotected, unsafe, vulnerable |