Synonyms of swear by in English:

swear by


See US English definition of swear by

See UK English definition of swear by

phrase

1‘I swear by the Blessed Virgin that it fell into the sea’

SYNONYMS
invoke, appeal to, call as one's witness

2‘many of the locals swear by these computers’

SYNONYMS
express confidence in, have faith in, put one's faith in, trust, have every confidence in, believe in
set store by, value
informal rate