/ Thesaurus / F Synonyms of flexible sigmoidoscope Find synonyms for: Noun1. sigmoidoscope, flexible sigmoidoscope, endoscopeusage: an endoscope (a flexible fiberoptic probe) for examining the sigmoid colonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language