undertake to do
undertake to (do something)
To pledge or commit to some task or activity; to assume responsibility to do something. After the incident, the senator undertook to reform the existing legislation around the issue. The local council has undertaken to clean up the public spaces around the city. Bob is undertaking to transfer all of our company data to a newer, more reliable digital storage medium.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
undertake to do something
to try to do something; to take the responsibility of doing something. The carpenter undertook to repair the door frame. I will undertake to fix it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.