Definitions

1. noun

a solemn promise or commitment, especially one made with the intention of being bound by it

“She took an oath to protect the environment.”

2. noun

an expression of strong emotion or determination, especially one that is sworn or vowed

“He swore an oath of loyalty to his friends.”

3. verb

to make a solemn promise or commitment, especially one that is sworn or vowed

“They all took turns to swear an oath of allegiance.”

4. verb

to express strong emotion or determination, especially by swearing or vowing

“He vowed an oath to complete the marathon.”

5. noun

the act of swearing or taking an oath, especially in a formal or ceremonial manner

“The judge administered the oath to the witness.”