Word family noun informant information informer misinformation disinformation adjective informative ≠ uninformative informed ≠ uninformed verb inform misinform adverb informatively
From Longman Dictionary of Contemporary Englishinformerin‧form‧er /ɪnˈfɔːmə $ -ɔːrmər/ noun [countable] TELLsomeone who secretly tells the police, the army etc about criminal activities, especially for money SYN informant 