Synonyms of logical

1 Syllable
sound, clear, wise, fair
2 Syllables
set-up, congruent, lucid, cogent, obvious, seamless, sanest, telling, valid, legit, saner, sequent, kosher, subtle
3 Syllables
structured, relevant, rational, pragmatic, judicious, theoretic, plausible, convincing, discerning, pertinent, consistent, museful, compelling, perspicuous, well-thought-out, evident, seriatim, methodic, germane, sensible, coherent, natural, scientific, consequent
4 Syllables
concedable, well-ordered, inducible, intelligent, condonable, vindicable, warrantable, disciplined, persuasive, perceptive, methodical, defensible, remissible, admissible, well-balanced, extensional, inferential, juridicious, justifiable, necessary, well-reasoned, systematic, deductive, convictive, deducible, successional, conceptive, ideational, analytic, fathomable, problem-solving, theoretical
5 Syllables
systematical, consecutive, philosophical, ruminative, matter-of-course, speculative, alphabetical, discriminating, well-organized, analytical, well-regulated, understandable, commonsensical, legitimate, formularized