The term BE UNABLE TO DECIDE can be summarized by three crossword solutions: WAVER (5 letters), WAFFLE (6 letters), and WAIVER (6 letters). WAVER is an intransitive verb meaning to sway or oscillate, often used to describe a person who is uncertain or hesitant. WAFFLE is a noun meaning to talk vaguely or equivocally, often used to describe someone who is unable to make a decision. WAIVER is a noun meaning to give up a right or claim, often used to describe someone who is unable to decide whether to accept or reject something.