Upiya [gerund of upeti] undergoing, going into, metri causā as ūpiya (—°) and opiya, viz. hadayasmiṃ opiya S I 199 = Thag 119; senūpiya Ja V 96 (v.l. senopiya; commentary sayanūpagata). In tadūpiya the 2nd part upiya represents an adjective upaka from upa (see ta I a), thus found at Miln 9.
(adj, adj, from upa) suitable; appropriate Construction: upa + iya