/ Thesaurus / L Synonyms of line officer Find synonyms for: Noun1. line officer, commissioned officerusage: a commissioned officer with combat units (not a staff officer or a supply officer)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language