/ Dictionary / Index A affinal: Meaning and Definition of Find definitions for: af•fi•nal Pronunciation: (a-fīn'l, u-fīn'l, af'īn-l), [key] — adj. related by or concerning marriage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: affinal (Thesaurus) affiliative drive affine Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language