Where does “adjektif” come from?

adjektif (Indonesian) comes from Dutch adjectief, from Middle French adjectif, from Latin adiectivus, from Latin adiciō, from Latin ad-, from Latin īn-, from Latin în, from Latin en — in.

Ancestry of “adjektif”, step by step

Step	Language	Word	Meaning
1	Dutch	adjectief	adjective
2	Middle French	adjectif	—
3	Latin	adiectivus	Alternative form of adjectīvus; adjective
4	Latin	adiciō	to throw, hurl, cast or fling an object to, towards, or at
5	Latin	ad-	to; usually prefixed to verbs, in which cases it...
6	Latin	īn-	un-, non-, not
7	Latin	în	in, at, on, upon, from (space)
8	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
9	Proto-Italic	en	in
10	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →