The Austronesian Comparative Dictionary

*kemuR to hold liquid in the mouth; to gargle

PMP kemuR to hold liquid in the mouth; to gargle

WMP
Old Javanese a-kəmuh to rinse with
ma-kəmu-kəmu to keep in the mouth (a liquid), rinse with
Javanese kemu to rinse out the mouth
Balinese kemu keep water in the mouth
kemuh wash out the mouth

POC gomuR to hold liquid in the mouth; to gargle

OC
Mussau gom-gom to eat, swallow
Lau gomu hold in the mouth, eat with the lips
gomu hold in the mouth
Motu gomu to fill the mouth with water
gomu-gomu to wash out the mouth with water
Mota kom keep food in the mouth, in the cheek
komkom something kept in the mouth
gom to hold liquid in the mouth