Someone (ma-) is ill at ease, queasy, or ticklish watching something.
Maariyek akwaya maytatamdag do pangpang.
I am ill at ease looking down over the cliff.
Something (cha-) causes someone to feel ill at ease, queasy, or ticklish.
Chaariyek kwaya chiban do kapayyatiyatikaw na a komayat.
Watching his climbing from tree to tree causes (me) to feel ill at ease.