Where does “selambatnya” come from?

selambatnya (Indonesian) comes from Indonesian se- -nya, from Indonesian se-, from Malay se-, from Old Malay sa-, from Proto-Malayic sA-, from Proto-Malayic əsa, from Proto-Malayo-Chamic əsa, from Proto-Malayo-Sumbawan əsa.

Ancestry of “selambatnya”, step by step

selambatnya traces back through two separate lines of ancestry.

via Indonesian se- -nya

StepLanguageWordMeaning
1Indonesianse- -nyaadverbial
2Indonesianse-one; same
3Malayse-one; used to form the comparative of adjectives;...
4Old Malaysa-
5Proto-MalayicsA-one
6Proto-Malayicəsa
7Proto-Malayo-Chamicəsa
8Proto-Malayo-Sumbawanəsa
9Proto-Malayo-Polynesianəsaone
10Proto-Austronesian*əsa
11Proto-Oceanic*isa

via Indonesian lambat

StepLanguageWordMeaning
1Indonesianlambatslow
2Malaylambatslow; late
Every word from Proto-Oceanic *isa