/ Dictionary / Index D dampproof: Meaning and Definition of Find definitions for: damp•proof Pronunciation: (damp'prf"), [key] — adj. resistant to dampness or the effects of dampness. —v.t. to make dampproof. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. damp-mop damp squib Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language