/ Thesaurus / S Synonyms of siamese twin Find synonyms for: Noun1. Siamese twin, conjoined twin, identical twin, monozygotic twin, monozygous twinusage: one of a pair of identical twins born with their bodies joined at some pointWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language