bottle up
US /ˈbɑː.t̬əl ʌp/
UK /ˈbɑː.t̬əl ʌp/

1.
reprimir, contener
to keep a strong emotion inside you and not express it
:
•
It's not healthy to bottle up your feelings.
No es saludable reprimir tus sentimientos.
•
He tends to bottle up his anger until it explodes.
Él tiende a reprimir su ira hasta que explota.