Definition - Transitive Verb 1: to adhere to and fulfill the terms of <~ an obligation> 2: to carry out or bring about <~ the work according to design> 3: to do according to prescribed ritual or law <~ a marriage ceremony> 4: to give a public rendition or presentation of <~ a copyrighted play> 1: to adhere to and fulfill the terms of a contract, promise, or obligation <failed to ~ under the agreement> 2: to carry out or present something