RATIONAL Synonyms: 140 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/rational
WebSynonyms for RATIONAL: intelligent, reasoning, reasonable, thinking, logical, analytical, mental, analytic; Antonyms of RATIONAL: irrational, unreasonable, nonrational, unthinking, unintelligent, unreasoning, stupid, dense.
DA: 20 PA: 73 MOZ Rank: 69