/ Dictionary / Index D declaim: Meaning and Definition of Find definitions for: de•claim Pronunciation: (di-klām'), [key] — v.i. to speak aloud in an oratorical manner; make a formal speech: Brutus declaimed from the steps of the Roman senate building. to inveigh (usually fol. by against): He declaimed against the high rents in slums. to speak or write for oratorical effect, as without sincerity or sound argument. —v.t. to utter aloud in an oratorical manner: to declaim a speech. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: declaim (Thesaurus) decl. declamation Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language