How is “muck up” used?

In Serenity (2005), one line is: “Kaylee, I want you to muck up the reactor core.”

Which movie is “muck up” from?

The clip at the top of this page is from Serenity (2005).

Phrasal verb

to do sth badly so that you fail to achieve what you wanted or hoped to achieve

Se oye en 5 películas

1
muck sth up
to do sth badly so that you fail to achieve what you wanted or hoped to achieve
He completely mucked up his English exam.
2
muck sth up
to spoil a plan or an arrangement
3
muck sth up
to make sth dirty
I don't want you mucking up my nice clean floor.

Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición

Kaylee, I want you to muck up the reactor core.

En 5 películas · n.º 1