/ Dictionary / Index P post-free: Meaning and Definition of Find definitions for: post-free Pronunciation: (pōst'frē'), [key] — adj. that may be sent free of postal charges, as government mail. postpaid. —adv. postpaid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: post-free (Thesaurus) postfix postglacial Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language