/ Thesaurus / K Synonyms of knock on Find synonyms for: Noun1. knock on, playusage: (rugby) knocking the ball forward while trying to catch it (a foul)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language