logical

Synonyms: analytic analytical clear cogent coherent commonsensical compelling congruent consequent consistent convincing deducible discerning discriminating extensional fair germane holding together holding water inferential intelligent judicious juridicious justifiable kosher legit legitimate lucid most likely necessary obvious perceptive perspicuous pertinent plausible rational relevant sensible sound subtle telling valid well-organized wise

Antonyms: illogical improbable irrational unlikely unreasonable