/ Dictionary / Index T thriftless: Meaning and Definition of Find definitions for: thrift•less Pronunciation: (thrift'lis), [key] — adj. without thrift; improvident; wasteful. useless or pointless. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thriftless (Thesaurus) thrift thriftshop Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language