enterprise, endeavor, endeavour -- (a purposeful or industrious undertaking (especially one that requires effort or boldness); "he had doubts about the whole enterprise")
attempt, effort, endeavor, endeavour, try -- (earnest and conscientious activity intended to do or accomplish something; "made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try")
Overview of verb endeavor
The verb endeavor has 1 sense
endeavor, endeavour, strive -- (attempt by employing effort; "we endeavor to make our customers happy")