The Austronesian Comparative Dictionary

*humbak wave, billow, swell at sea

PWMP humbak wave, billow, swell at sea ⇫

WMP
Tagalog humbák hollow, concave (of cheeks, stomach or the like)
Hanunóo humbák wave(s) at sea, ocean waves
Aklanon húmbak wave, crest
Maranao ombak artesian well; water pump
Toba Batak umbak wave
Iban umbak wave
Malay ombak wave; billow; (in art) wavy pattern. Esp. of broken or foaming waves, in contrast to rollers or ground-swell
Rejang umboʔ wave
Wolio umba swell (of sea)
Sundanese ombak wave, swell (of sea)
Old Javanese umbak wave
Madurese ombaʔ wave, swell, billow
Javanese ombak a wave
Balinese umbak wave, surf
Sasak umbak wave, billow

PWMP humbak-humbak rise and fall like the swells at sea ⇫

WMP
Maranao ombak-ombak artesian well; water pump
Toba Batak umbah-umbah the piston which is moved up and down in the bamboo tube of a traditional bellows

PWMP ma-humbak full of waves, as a stormy sea ⇫

WMP
Aklanon ma-húmbak wavy, stormy, rough (sea)
Old Javanese m-ombak-ombak-an undulating, surging, in waves
m-ombak with waves, undulating, surging