swear by sth Definition in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Definition of “swear by sth” - English Dictionary

Definition of "swear by sth" - British English Dictionary

See all translations

swear by sth

phrasal verb with swear uk   /sweər/  us   /swer/ verb (swore, sworn)
to ​believestrongly that something is ​effective or ​useful: My ​dadswears by these ​vitaminpills.
(Definition of swear by sth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of swear by sth?