adjective likely, beneficial fit, suitable AN.i.120; SN.iii.268; SN.iv.23 sq., SN.iv.133 sq. (Nibbāna˚ paṭipadā); Ja.i.182, Ja.i.195; Ja.ii.436 (kiṃci sappāyaṃ something that did him good, a remedy); Vin.i.292 Vin.i.302; Mil.215 (sappāyakiriyā, giving a drug). nt something beneficial, benefit, help Vism.34, Vism.87 (˚sevin) Vb-a.265 (various), Vb-a.271 (˚kathā)
■ Ten sappāyas 10 asappāyas at Dhs-a.168
■ sappāyāsappāyaṃ what is suitable, and what not Ja.i.215, Ja.i.471; used as the last part of a compound, meaning what is suitable with reference to: senāsanasappāya (nt.) suitable lodgings Ja.i.215.

saṃ + pā (= pra + ā) + i, cp. pāya. The corresponding BSk. form is sāmpreya (= saṃ + pra + i with guṇa), e.g. Avs.i.255; Avs.iii.110