/ Thesaurus / L Synonyms of line of sight Find synonyms for: Noun1. line of sight, line of vision, lineusage: an imaginary straight line along which an observer looksWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language