This is the 707th most frequent Malay word.
campur
Mix.
The word 'campur' is used to signify 'to mix' or 'blend' ingredients together.
Saya campur gula dengan kopi.
I mix sugar with coffee.
Here, 'campur' indicates 'to interfere' or 'get involved' in someone's affairs.
Jangan campur urusan mereka.
Do not get involved in their matters.
In this case, 'campur' refers to the act of combining to create a new result.