/ Thesaurus / L Synonyms of law of diminishing returns Find synonyms for: Noun1. law of diminishing returns, law, law of natureusage: a law affirming that to continue after a certain level of performance has been reached will result in a decline in effectivenessWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language