The crossword solution for the term 'ONCE, MAYBE' is ENOUGH. The term 'ENOUGH' is an adverb that means to a sufficient degree or in a sufficient quantity. It is often used to express that something is satisfactory or adequate. It can also be used to indicate that something has reached its limit or has been completed. In this context, it could be interpreted as meaning that something may happen only once, and that it may or may not be ENOUGH.