What is the meaning of Sweren?

to swear, to declare solemnly

to swear, to curse

to hurt, to be painful

To swear to do; to take an oath:

1. To take an oath that an assertion is true.
2. To swear upon an object or (a human or divine) witness.
3. To swear to adhere or remain faithful to a given person.
4. To grant permission by taking an oath.

To take an oath that an assertion is true.

To swear upon an object or (a human or divine) witness.

To swear to adhere or remain faithful to a given person.

To grant permission by taking an oath.

To give testimony as a (sworn) witness.

To curse; to utter swear words (especially as part of a promise)

To plot or collude; to form a conspiracy or secret pact.

To proclaim or commence.

to swear (an oath)

to swear

third-person plural present subjunctive of swëran

Source: wiktionary.org