Niṭṭhubhati & nuṭṭhubhati

nuṭṭhubhati at Vin.i.271; Ja.i.459; also niṭṭhuhaṭi to spit out, to expectorate Vin.i.271 (nuṭṭhuhitvā), Vin.iii.132 (id.); Ja.ii.105, Ja.ii.117 (nuṭṭh˚); Ja.vi.367; Dhp-a.ii.36 (niṭṭhuhitvā). pp. nuṭṭhubhita Sdhp.121
■ Cp. oṭṭhubhati

Sk. niṣṭhubhati, but in meaning = Sk. niṣṭhīvati nis + *thīv, stubh taking the function of ṣṭhīv, since stubh itself is represented by thavati & thometi