Nippatati & Nipphatati

to fall out; rush out, come forth, go out from (c. abl.) Vin.ii.151 (nipphaṭati variant reading nippaṭati); Ja.v.467 (= nikkhamati Com.; or is it nipatati?)
ger nippacca (cp. BSk. nirpatya Avs.i.209).

nis + patati