to depart, escape from, be freed from (c. abl.) AN.i.260 (yasmā atthi loke nissaraṇaṃ tasmā sattā lokamhā nissaranti)
pp nissaṭa, grd nissaraṇīya (q.v.); cp. also nissaraṇa & paṭi˚.

nis + sarati