/ Dictionary / Index U undertaking: Meaning and Definition of Find definitions for: un•der•tak•ing Pronunciation: (un"dur-tā'king, un'dur-tā"- for 1–3 un'dur-tā"king for 4), [key] — n. the act of a person who undertakes any task or responsibility. a task, enterprise, etc., undertaken. a promise; pledge; guarantee. the business of an undertaker or funeral director. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undertaking (Thesaurus) undertaker undertenant Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language