sensible

1 able to be perceived by a sense or by the mind a sensible change in temperature Synonyms appreciable, apprehensible, detectable, discernible (also discernable), distinguishable, palpable, perceptibleRelated Words audible, observable, tangible, visible; clear, conspicuous, evident, eye-catching, manifest, noticeable, obvious, plain, ponderable, prominent, striking; apparent, distinct, identifiable, significant, straightforwardNear Antonyms inaudible, intangible, invisible; inconspicuous, indistinct, unnoticeable, unobtrusive; faint, insignificant, slight, trivial; buried, concealed, covert, disguised, hidden, obscure, shrouded, vagueAntonyms impalpable, imperceptible, inappreciable, indistinguishable, insensible, undetectable

2 according to the rules of logic this is the only sensible conclusion Synonyms analytic (or analytical), coherent, consequent, good, rational, reasonable, logical, sound, valid, well-founded, well-groundedRelated Words a posteriori, a priori, syllogistic; cognitive, empirical (also empiric); defendable, defensible, justifiable, maintainable, supportable, sustainable, tenableNear Antonyms casuistic (or casuistical), eristic (also eristical), fallacious, misleading, sophistic (or sophistical), specious; unarticulated; unscientific; absurd, cockeyed, crazy, daffy, fatuous, half-baked, half-witted, harebrained, insane, loony (also looney), mad, nonsensical, nutty, preposterous, simpleminded, stupid, weak-minded, witless; senseless, thoughtless; uncompelling, unconvincingAntonyms illegitimate, illogical, incoherent, inconsequent, inconsequential, invalid, irrational, unreasonable, unsound, weak

3 based on sound reasoning or information a sensible decision to delay marriage until they knew one another better Synonyms commonsense, commonsensible, commonsensical, firm, hard, informed, just, justified, levelheaded, logical, rational, reasonable, reasoned, good, sober, solid, valid, well-foundedRelated Words actual, real, true; certain, sure; certified, validated, verified; confirmed, corroborated, substantiated; cogent, convincing; colorable, credible, plausibleNear Antonyms unsubstantiated, unsupported, unwarranted; flimsy, implausible, unconvincing, weak; fallacious, false, misguided, misledAntonyms groundless, illogical, invalid, irrational, nonrational, nonsensical, nonvalid, unfounded, uninformed, unjustified, unreasonable, unreasoned, unsound

4 having specified facts or feelings actively impressed on the mind sensible of the shift in attitude by the general public on the issue Synonyms alive, apprehensive, aware, cognizant, mindful, conscious, sentient, ware, wittingRelated Words alert, attentive, careful, cautious, heedful, observant, open-eyed, regardful, safe, vigilant, wary, watchful, wide-awake; hyperaware, hyperconsciousNear Antonyms careless, heedless, inattentive, incautious, mindless, unguarded, unheeding, unwaryAntonyms insensible, oblivious, unaware, unconscious, unmindful, unwitting