muddle along
to progress in confusion; to continue awkwardly. I will just have to muddle along as best I can until things get straightened out. The project muddled along until the new manager got hold of it.
muddle around
to work inefficiently. I can't get anything done today. I'm just muddling around. Jed is not doing his job well. He is muddling around and getting nothing done.
muddle something up
to mix something up; to make something confusing. You really muddled the language of this contract up. Who muddled up the wording?
muddle through (something)
to manage to get through something awkwardly. We hadn't practiced the song enough, so we just muddled through it. We didn't know what we were meant to do, so we muddled through.
muddled (up)
intoxicated. I've had a little too much muddler, I think. Anyway, I'm muddled. Larry is too muddled up to drive.