To deliberately begin to do (something), To promise or guarantee, To give a promise or guarantee; to be surety, transitive verb_ Specifically, to take upon one's self solemnly or expressly; to lay one's self under obligation, or to enter into stipulations, to perform or to execute; to covenant; to contract, To take upon one's self; to engage in; to enter upon; to take in hand; to begin to perform; to set about; to attempt, obsolete To engage with; to attack, verb_ accept as a challenge, enter into a contractual arrangement, promise to do or accomplish