/ Dictionary / Index O out-and-outer: Meaning and Definition of Find definitions for: out-and-out•er Pronunciation: (out"n-ou'tur, -nd-ou'-), [key] — n. a person who does things with excessive thoroughness; extremist. a thoroughgoing or perfect example of a kind. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: out-and-outer (Thesaurus) out-and-out outargue Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language