kuppati

to shake, to quiver, to be agitated, to be disturbed, to be angry. aor. kuppi, pp. kupita, ger. kuppa, caus. kopeti AN.iii.101 Snp.826, Snp.854; Pp.11, Pp.12, Pp.30. Of the wind Mil.135 of childbirth udaravāto kuppi (or kupita) Ja.ii.393, Ja.ii.433 paccanto kuppi the border land was disturbed Ja.iv.446 (cp. kupita).

Sk. kupyate, *qup to be agitated, to shake = Lat. cupio, cupidus, “to crave with agitation,” cp semantically Lat. tremere → Fr. craindre