/ Thesaurus / F Synonyms of fertiliser Find synonyms for: Noun1. fertilizer, fertiliser, plant food, chemical, chemical substanceusage: any substance such as manure or a mixture of nitrates used to make soil more fertileWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language