Under-takes refers to the act of accepting or committing to something. However, its antonyms are words that mean the opposite. The first antonym is "decline," which means refusing or rejecting an offer or request. Second, "abandon" means giving up on a project or a goal. Another antonym is "ignore," which means disregarding or neglecting something. Fourth, "postpone" means delaying or deferring an action. Lastly, "shirk" means avoiding or evading responsibilities. All these words serve as antonyms to under-takes and connote disinterest, reluctance, or outright avoidance. Choosing the right antonym depends on the context and intention of the speaker or writer.