behind · adv
behind (SLOWER)
C1 slower or later than someone else, or than you should be
Dictionary examples:
She's behind on the rent. (25.3)
behind (BACK)
B1 at or to the back of someone or something
Dictionary examples:
The sneaky kid always poked his sister from behind during class. (0.0)
My cat always sneaks up behind me when I'm opening a can. (0.0)
The ghost kept tapping me on the shoulder from behind. (0.0)
Somebody grabbed me from behind. (34.1)