English · Phrasal verb Attested

swear upon

In real, traceable use. Part of the curated seed collection; community review is coming.

Also seen as: swear on

Meaning · English

To take an oath on someone or something.

Where it’s used: Used American English

to swear upon the Holy Writ to speak the truth

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “swear upon” mean?

To take an oath on someone or something.

Is “swear upon” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.

👁 Views 0 today 0 past 7 days 0 this month 0 all time