Synonyms and Antonyms of irrational
not using or following good reasoning
- it's irrational to think that you can continue to consume an excess of calories and not gain weight
fallacious, illegitimate, illogical, inconsequent, inconsequential, invalid, nonrational, unreasonable, unreasoning, unsound, weak
eristic (also eristical), misleading, sophistic (or sophistical), specious
half-baked, ill-advised, misguided, unconsidered, unreasoned
inconsistent
absurd, asinine, foolish, meaningless, nonsensical, preposterous, reasonless, senseless, silly
Kafkaesque, odd, peculiar, strange, surreal, unusual, weird
insane, mad, nutty, wacky (also whacky)
disordered, disorganized, rambling, random
unconvincing
inexplicable, unaccountable, unexplainable
commonsense, sane, sensible, sober, wise
enlightened, informed, just, justified, reasoned
ordered, organized
clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid
certain, sure, true
confirmed, corroborated, demonstrated, established, substantiated, validated
