/ Thesaurus / D Synonyms of dusky shark Find synonyms for: Noun1. dusky shark, Carcharhinus obscurus, requiem sharkusage: relatively slender blue-grey shark; nearly worldwide in tropical and temperate watersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language