N- -an, mag- -an (recip.)
To watch s.o. or his actions (in order to find an opportunity to do s.t. bad), to spy on s.t.
Sipihanne sawe'ne sōng mapatey.
He watches his companion whom he is going to kill.
Someone is spying on my carabao.
Magsipihan me' a'a magkuntarahin.
People who are enemies spy on each other.