To bungle something or cause problems. A noun or pronoun can be used between "futz" and "up." If you're the one who futzed up the printer, then help me clear this paper jam. Mom wasn't going to punish me, but you futzed it all up when you opened your big mouth about how I got home past curfew last night!
Futz something up
Sl. to mess something up. Who futzed the computer up? I don't want to futz up the deal, so I will be quiet.
To fail at or make a mess of something: I read the speech as well as I could, but I futzed it up. We futzed up the trip because we got lost. Don't drink before going onstage—you'll futz up.
futz something up
tv. to mess something up. I don’t want to futz up the deal, so I will be quiet.