English version

swear by something

From Longman Dictionary of Contemporary Englishswear by something phrasal verb informalEFFECTIVEto have great confidence in how good or effective something is He swears by vitamin C pills. swear→ See Verb table
Examples from the Corpus
swear by The mother-goddess swore by a necklace of blue stones.A: Some cooks say that basting does nothing to ensure moist meat; others swear by it.There is no medical proof that taking Vitamin B6 helps, but some of his patients swear by it.Other friends swore by Jenny Craig because it was so convenient.The parson would swear by Jupiter to show he's a public school man but these old women would have him.The Proconsul offers him a last-minute reprieve, however, if he will repent and swear by the genius of Caesar.At the Morse School, principal James Coady and his teachers swear by the results.Some swear by the techniques of Life Cycle Assessment, whilst others see it as a crude substitute for sound judgment.
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Verb table
swear
Simple Form
Present
I, you, we, theyswear
he, she, itswears
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Past
I, you, he, she, it, we, theyswore
Present perfect
I, you, we, theyhave sworn
he, she, ithas sworn
Past perfect
I, you, he, she, it, we, theyhad sworn
Future
I, you, he, she, it, we, theywill swear
Future perfect
I, you, he, she, it, we, theywill have sworn
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Continuous Form
Present
Iam swearing
he, she, itis swearing
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you, we, theyare swearing
Past
I, he, she, itwas swearing
you, we, theywere swearing
Present perfect
I, you, we, theyhave been swearing
he, she, ithas been swearing
Past perfect
I, you, he, she, it, we, theyhad been swearing
Future
I, you, he, she, it, we, theywill be swearing
Future perfect
I, you, he, she, it, we, theywill have been swearing
> View Less