/ Thesaurus / I Synonyms of in his right mind Find synonyms for: Adjective1. in his right mind(predicate), in her right mind(predicate), in their right minds(predicate), sane (vs. insane)usage: behaving responsiblyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language