/ Dictionary / Index I inability: Meaning and Definition of Find definitions for: in•a•bil•i•ty Pronunciation: (in"u-bil'i-tē), [key] — n. lack of ability; lack of power, capacity, or means: his inability to make decisions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inability (Thesaurus) Ina in absentia* Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language