to the bitter end

US /tə ðə ˈbɪtər ɛnd/
UK /tə ðə ˈbɪtər ɛnd/
"to the bitter end" picture
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.