Meaning of the word "swear by" in English

What does "swear by" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

swear by

US /swer baɪ/
UK /sweər baɪ/
"swear by" picture

Phrasal Verb

to believe strongly in the effectiveness or truth of something

Example:
My grandmother swears by this herbal remedy for colds.
Many chefs swear by fresh, local ingredients.
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