Definitions

1. adjective

giving a promise or guarantee, especially of payment or performance

“The promissory note was signed by the borrower and the lender.”

2. noun

a promise or guarantee, especially of payment or performance, that is given in writing

“The promissory note was used as collateral for the loan.”

3. adverb

in a way that involves giving a promise or guarantee, especially of payment or performance

“The company operates promissory, offering refunds if the product fails to meet expectations.”