The Austronesian Comparative Dictionary

*deRu roll of thunder

PWMP deRu roll of thunder

WMP
Maranao rego groan
dego grunt
Iban deruʔ guntur roll of thunder
Malay men-deru to roar, as a crowd, or the rush of a cataract; of roaring wind, of a storm’s roar; of poultry cackling their greetings to a new arrival