/ Thesaurus / I Synonyms of ill usage Find synonyms for: Noun1. maltreatment, ill-treatment, ill-usage, abuse, mistreatmentusage: cruel or inhumane treatment; "the child showed signs of physical abuse"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language