/ Dictionary / Index U underpainting: Meaning and Definition of Find definitions for: un•der•paint•ing Pronunciation: (un'dur-pān"ting), [key] — n. the first coat of paint, esp. the initial painting on a canvas in which the major areas, tones, colors, and forms are indicated in mass. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. undernutrition underpants Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language