Rain, crying, sickness, etc., (may-) become worse, increases.
adádda
lala
pangay
Maypāngay iyaw chimoy do nakapay-ayokayam na.
The rain increases when the northeasterly winds became stronger.
An parinen mo komwan, maypāngay anchiw ganyit mo.
If you do that, your sickness will increase.
Someone increases in doing something (pay-).
Paypāngay mwabaw tomanyis, ta baōtan imon anang mo.
Don't increase crying, because mother will beat you.
Something (maypay-) keeps increasing.
An parinen nyo nawri, ki maypaypāngay paw kapakaāwat nyo.
If you do that, your understanding will still keep increasing.
Naypaypāngay paw no kelsangaw.
The waves still kept increasing.