/ Dictionary / Index L light-minded: Meaning and Definition of Find definitions for: light-mind•ed Pronunciation: (līt'mīn'did), [key] — adj. having or showing a lack of serious purpose, attitude, etc.; frivolous; trifling: to be in a light-minded mood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: light-minded (Thesaurus) light microscope light mineral Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language