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 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

Chatterjee pointed out that in cases of conflict between wildlife and people in South Asia, rapid deployment of forest staff and conservation teams is critical to secure the area, manage crowds, and safely guide or tranquilize animals before situations escalate. — ABC News, 27 Apr. 2026

He was tranquilized from approximately 20 meters — about 66 feet — away. — Hanna Wickes, Charlotte Observer, 17 Apr. 2026