Synonyms for grisly | Synonym Finder www.synonym-finder.com/synonym/grislyPrivate View Synonyms for (adj) grisly. Synonyms: gruesome, grim, grisly, ghastly, sick, macabre. Definition: shockingly repellent; inspiring horror. Usage: ghastly wounds; the grim aftermath of the bombing; the grim task of burying the victims; a grisly murder; gruesome evidence of human sacrifice; macabre tales of war and plague in the Middle ages ...