on-
on-engos/ man-aengos/ imengos,
-an
a-ngosan or engosan/ engosi or a-ngosi/ inngosan or ingosan,
me--an
ma-ngosan/ iya-ngosan
To be sad (about something).
Imengosak tep etiy i asok.
I am sad because my dog died.
Engosan koy asok nem metiy.
I will be sad about my dog when it dies.
Ingosan koy asok tep etiy.
I was sad about my dog because it died.
Eg to piyan a ma-ngosan nem on-aragwi.
He does not want them to be sad about him when he goes far away.
On-engos.
She will be sad. or She will become sad.
Imengos.
She was sad. or She became sad.