/ Dictionary / Index D deniability: Meaning and Definition of Find definitions for: de•ni•a•bil•i•ty Pronunciation: (di-nī"u-bil'u-tē), [key] — n. the ability to deny something, as knowledge of or connection with an illegal activity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Denham deniable Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language