bumalikwas (um-) to turn suddenly to the opposite side, to suddenly rise from a lying position. Bumalikwas ako sa kama nang narinig ko ang putok ng baril. I jumped out of bed when I heard the gunshot. magbalikwas, balikwasin (mag-:in) to turn something suddenly to the opposite side
dapa
v.
dumapa' (-um-) to lie flat on one's chest. Dumapa ka kapag may narinig kang putok. Lie down when you hear the sound of a gun.
v.
madapa (ma-) to fall unexpectedly, to stumble magdapa, idapa (mag-:i-)