Breadcrumb Home > Thesaurus > P Synonyms of phlegmatic Find synonyms for: Adjective1. phlegmatic, phlegmatical, unemotional (vs. emotional)usage: showing little emotion; "a phlegmatic...and certainly undemonstrative man"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of phlegmatic (Dictionary) ✖ Related Content Daily Word Quiz: perambulate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language