Undertake is a verb that means to assume or undertake a task, responsibility, or obligation. There are many synonyms for the word undertake, including take on, accept, handle, tackle, approach, embrace, shoulder, embark on, begin, commence, launch, initiate, start, undertake, and set about. Each of these words describes the act of taking on a task or responsibility, often with the intention of completing it or achieving a goal. Whether you are starting a new project, taking care of a family member, or beginning a new career, it is important to understand the many synonyms for undertake in order to communicate your intentions clearly.