Because

1.

(By reason of, for the reason that, since, on account of) ពីព្រោះ, ដោយហេតុថា, ព្រោះ, ដោយមូលហេតុថា, មកពីហេតុ, I'm eating because I'm hungry ខ្ញុំញ៉ាំព្រោះខ្ញុំឃ្លាន, It's because I'm hungry that I'm eating ខ្ញុំឃ្លានបានជាខ្ញុំញ៉ាំ, because of that ដោយហេតុនោះហើយ, I'm alive because of him ខ្ញុំរស់រានមានជីវិតដោយសារគាត់
Example: He refused to come into the room because he wasn't properly dressed.

• because of
  - ពីព្រោះតែ

1.

By or for the cause that; on this account that; for the reason that.

2.

In order that; that.

1.

as, for, inasmuch as, since