The phrase "betook oneself" refers to going to a particular place or taking action in a certain way. Antonyms for this phrase can be "stayed put", "remained inactive", or "retreated." If someone stayed put, they decided not to go anywhere or take any action. If someone remained inactive, they didn't move or take any steps to do something. If someone retreated, they moved away from a situation or place. Antonyms for "betook oneself" can be useful when you want to describe someone who didn't take action or decided not to go somewhere.