swear by

US /swer baɪ/
UK /swer baɪ/
"swear by" picture
1.

bersumpah demi, sangat percaya pada

to believe strongly in the effectiveness or truth of something

:
My grandmother swears by this herbal remedy for colds.
Nenek saya bersumpah demi obat herbal ini untuk pilek.
Many chefs swear by fresh, local ingredients.
Banyak koki bersumpah demi bahan-bahan segar dan lokal.