/ Dictionary / Index A aftertax: Meaning and Definition of Find definitions for: af•ter•tax Pronunciation: (af'tur-taks", äf'-), [key] — adj. remaining after applicable taxes have been deducted: a sharp decrease in her aftertax income. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aftertaste afterthought Related Content Daily Word Quiz: rotund Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language