indonesian
n. C / U A2 Elementary US //ˌɪndoʊˈniʒən// in·done·sian
n. a person from the country of Indonesia or the official language spoken there.
n. a native or inhabitant of Indonesia, or the Austronesian language that serves as the official tongue of the Republic of Indonesia.
My new neighbor is an Indonesian from Jakarta.
The conference provided a translator for the delegates who only spoke Indonesian.
While many citizens speak regional dialects at home, Indonesian serves as the unifying lingua franca across the vast and diverse archipelago.
From Indonesia + -an.
Usage
Capitalised in all contexts. When referring to the language, it is uncountable; when referring to people, it is countable.