/ Thesaurus / T Synonyms of think up Find synonyms for: Verb1. think up, think of, dream up, hatch, concoct, create by mental act, create mentallyusage: devise or invent; "He thought up a plan to get rich quickly"; "no-one had ever thought of such a clever piece of software"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language