tranquillize
US /ˈtræŋ.kwɪ.laɪz/
UK /ˈtræŋ.kwɪ.laɪz/

1.
uspokajać, usypiać
make (someone or something) calm and quiet by administering a tranquilizer
:
•
The vet had to tranquillize the agitated dog.
Weterynarz musiał uspokoić wzburzonego psa.
•
They used a dart to tranquillize the wild animal.
Użyli strzałki, aby uspokoić dzikie zwierzę.