/ Thesaurus / P Synonyms of phalangium opilio Find synonyms for: Noun1. harvestman, daddy longlegs, Phalangium opilio, arachnid, arachnoidusage: spiderlike arachnid with a small rounded body and very long thin legsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language