kāmutamuta, kātamutamu, v.t., v.i. Move (the lips), move (of the lips), mutter.
Kua kāmutamuta ‘aia, nō te mea kua mataku ‘aia i te tuatua.
He muttered (under his breath), because he was afraid to speak out;
Kua ‘akarongo mātou i te kāmutamuta i te ngūtupa, inā rā kāre ‘e tangata i ‘aere atu i te ‘ākara.
We heard mutterings at the door, but nobody went to look;
Ko te tamaiti kāmutamuta tēia i tōna va‘a i roto i te ‘āpi‘i.
This child is always muttering in class;
Ko te ngutu ‘ua tei kātamutamu, kāre rava ‘e ‘apinga i ‘akarongo‘ia.
Only the lips moved, nothing could be heard. [kā-3, muta RR with optional metathesis.]