The Austronesian Comparative Dictionary

Chance Resemblances: booming sound

Dempwolff (1938) posited *ketug ‘to beat, pound’ based on a comparison of this language__Tagalog form with language__Javanese ketug ‘to beat out’. I am unable to find the latter form in either Horne (1974) or Pigeaud (1938), and have substituted language__Old Javanese kətug for it. In either case, until further supporting evidence is found this comparison is best treated as a product of chance.

WMP
Tagalog kutóg throb; pulsation
Old Javanese kətug booming, thundering, rumbling, crashing, roaring, rattling, thumping; thunder