undertake

v. (-king; past -took; past part. -taken) 1 agree to perform or be responsible for; engage in, enter upon (work, a responsibility, etc.). 2 (usu. Foll. By to + infin.) Promise. 3 guarantee (undertake that he is innocent).

v. t. 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.