to the bitter end
US /tə ðə ˈbɪtər ɛnd/
UK /tə ðə ˈbɪtər ɛnd/

1.
acı sona kadar, sonuna kadar
until a struggle or unpleasant experience is completely finished, despite difficulties or suffering
:
•
They fought to the bitter end, refusing to surrender.
Acı sona kadar savaştılar, teslim olmayı reddettiler.
•
She decided to stick with the project to the bitter end, even though it was very challenging.
Çok zorlayıcı olmasına rağmen projeye acı sona kadar bağlı kalmaya karar verdi.