1
general::
Phrase(s): 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.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Blunder through something, manage but awkwardly, as in The choir never knows how to line up, but we muddle through somehow. [Early 1900s]
American Heritage Idioms