To grumble, mutter, murmur.
Bang ngamā sa'inun da'a kew ngunub-ngunub (da'a kunub-kunubanun).
When your mother is angry, don’t grumble (at her).
Palabey ku si bihingde, kaleku siye magkunub-kunub.
I went past them and heard them murmur.
Ine kinunub-kunubnu iyan?
What are you muttering there?