Tolerate

ABIDE

Think of a word meaning to accept something patiently, often used in the phrase "can't ___ by the rules."

"Tolerate" hints at "abide" because one meaning of "abide" is to put up with something, like enduring an annoying situation. The word also fits neatly in crosswords as a concise synonym for "tolerate" or "accept." No wordplay here—it’s a straightforward definition match, relying on the less common but valid usage of "abide."