Breadcrumb Home > Thesaurus > F Synonyms of fastball Find synonyms for: Noun 1. fastball, heater, smoke, hummer, bullet, pitch, delivery usage: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of fastball (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: meretricious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language