/ Thesaurus / G Synonyms of grimness Find synonyms for: Noun1. ghastliness, grimness, gruesomeness, luridness, frightfulnessusage: the quality of being ghastly2. asperity, grimness, hardship, rigor, rigour, severity, severeness, rigorousness, rigourousness, difficulty, difficultnessusage: something hard to endure; "the asperity of northern winters"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language