adjective moving to & fro, wavering, trembling, unsteady, fickle SN.i.204 SN.v.269; MN.i.470 (and a˚ steady); AN.iii.199, AN.iii.355, AN.iii.391; Dhp.33; Pp.35; Ja.i.295; Ja.ii.360. At Ja.vi.548 it means one who lets the saliva flow out of his mouth (explained by paggharita-lāla “trickle-spit”).

Sk. capala cp. cāpa bow; from *qep to shake or quiver, see Walde Lat. Wtb. under caperro