Synonyms of tranquilize

tranquilize

verb

ˈtraŋ-kwə-ˌlīz 

variants also tranquillize

as in to calm

to free from distress or disturbance

at long last the crying baby was tranquilized by the steady rocking of her cradle

Synonyms & Similar Words

• calm
• soothe
• compose
• lull
• appease
• quiet
• relax
• salve
• quieten
• relieve
• settle
• still
• becalm
• pacify
• hush
• placate
• quell
• mollify
• alleviate
• lullaby
• conciliate
• allay
• mitigate
• ease
• assuage
• stupefy
• sedate
• narcotize
• solace
• lay

Antonyms & Near Antonyms

• upset
• disturb
• agitate
• vex
• perturb
• intensify
• aggravate
• heighten
• discompose
• disquiet
• arouse
• rouse
• stir (up)
• key (up)
• excite
• incite
• work up
• foment

Example Sentences

Recent Examples of tranquilize

The happy couple weren’t even able to celebrate Lucy saying yes to the big question Tim popped while down on knee, because they were immediately tranquilized and kidnapped by an Everett crony. — Ryan Coleman, Entertainment Weekly, 28 July 2026

Bourne Police assisted the Environmental Police in tranquilizing the bear, which was removed without incident. — Colleen Cronin, Boston Herald, 12 July 2026

The mountain lion was later safely and humanely tranquilized by a biologist with the California Department of Fish and Wildlife (CDFW), with assistance from wildlife officers and local law enforcement, according to NBC4 and the California Statewide Law Enforcement Association. — Moná Thomas, PEOPLE, 9 June 2026

In 2019, a young bear that had apparently trekked from the hills near Vacaville was tranquilized on campus. — Cecilio Padilla, CBS News, 15 May 2026