Synonyms and Antonyms of illogical
not using or following good reasoning
- the illogical claim that playing basketball makes people taller because one sees so many tall players
- illogical people are likely to believe every sensational claim made on TV
fallacious, illegitimate, inconsequent, inconsequential, invalid, irrational, 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
