to speak equivocally; to speak about something in such a way as to avoid declaring a definite position
Politicians generally waffle on controversial issues until they're finally forced to take one position or another.
Rhymes with "baffle" which means confused. Waffle also means something similar. A dog barks like: WAFF WAFF WAFF. Repeating the same. When human repeat same words in their speech. Implies that he/she is hesitant doubtful and unclear Waf + fle. Waf (wife) + ffle (Eiffel tower. So your plan of visit Eiffel tower with your wife is uncertain, as you have a lot of work. So you cannot decide what to do.