SWEAR

I . v. n.

1.

Utter an oath, take oath, take an oath.

2.

Declare ( solemnly ), avow, affirm, depose, testify, state, say, vow.

3.

Use profane language, take the name of God in vain, curse, blaspheme.

II . v. a.

Administer an oath to, put under oath.