/ Dictionary / Index A attitudinarian: Meaning and Definition of Find definitions for: at•ti•tu•di•nar•i•an Pronunciation: (at"i-td"n-âr'ē-un, -tyd"-), [key] — n. a person who assumes attitudes or poses for effect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. attitude attitudinize Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language