/ Thesaurus / L Synonyms of lubricating substance Find synonyms for: Noun1. lubricant, lubricator, lubricating substance, lube, substanceusage: a substance capable of reducing friction by making surfaces smooth or slipperyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language