/ Thesaurus / B Synonyms of by blow Find synonyms for: Noun1. bastard, by-blow, love child, illegitimate child, illegitimate, whoreson, offspring, progeny, issueusage: the illegitimate offspring of unmarried parentsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language