swear

v

1. take an oath, swear on the Bible, swear on a stack of Bibles, swear by all that's holy, say before God.

2. vow, pledge, promise, solemnly promise; give one's word, say on Scout's honor, pledge one's honor, cross one's heart and hope to die; affirm, asseverate, avow, aver, attest, declare, assert, state flat out; own, acknowledge, profess, admit, confess.

3. testify, testify under oath, give evidence, witness, bear witness to, depose, depone; sign an affidavit; tell the truth, the whole truth and nothing but the truth.

4. curse, Inf. cuss, blaspheme, take the name of the Lord in vain; use profanity, be profane or sacrilegious or irreverent; swear like a stevedore or muleteer or trooper, Inf. cuss a blue streak, turn the air blue, be foul-mouthed; imprecate, damn, curse in every language one knows, curse up hill and down dale, execrate, anathematize, denunciate, Sl. badmouth.

5. swear by

a.Informal. rely on, depend on, have confidence in, trust, trust implicitly, believe in, count on; guarantee, avouch, vouch for, stake one's life on; respect, admire, reverence, worship, venerate.b. know, know for certain, be sure, be positive, Inf. be one-thousand percent sure; confirm, substantiate, document, demonstrate, prove, warrant.