/ Thesaurus / H Synonyms of hot line Find synonyms for: Noun1. hot line, telephone line, phone line, telephone circuit, subscriber line, lineusage: a direct telephone line between two officialsWordNet 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