Indonesian slang (bahasa gaul or bahasa prokem) is an informal language in Indonesia.Despite its direct origins, Indonesian slang often differs quite significantly in both vocabulary and grammatical structure from the most standard form of Indonesia's national language.
I hope this will become something like Indonesian slang dictionary: A ABG, A Be Ge, Anak Baru Gede = Teenager Ababil, ABG labil = labile teenager, immature Abang = calling older male Afgan = Sadistic, when someone hurt you, extremely low bidding Agan, gan = bro Akik = Gemstone Akik = Akika = i, me, mine Alay = overdressed, asshole, jerk, teenage douchebag (female/male) Aq, ak, akyu akoh, akooh = i, me, mine Ajib = Cool, awesome Amburadul = disorganized Amit-amit (sometimes followed by “jabang bayi”) = God forbid, Oh my God Amoy = Chinese/oriental girl Amsyong = Damn it!
Yey = You, Yours Yg (abbreviation of Yang) = is, that is Yoa = Yoi = Yup Notes: 1.
Its native name, bahasa gaul (the 'social language'), was a term coined in the late 1990s where bahasa means 'language' and gaul means 'social', 'cool' or 'trendy'.
Similarly, the term bahasa prokém (a more out-dated name for Indonesian slang) created in the early 1980s means 'the language of gangsters'.
While it would be unusual to communicate orally with people on a casual basis with very formal Indonesian, the use of proper or 'good and correct' Indonesian ("bahasa Indonesia yang baik dan benar") is abundant in the media, government bodies, schools, universities, workplaces, amongst some members of the Indonesian upper-class or nobility and also in many other more formal situations. This is, in part, due to its vocabulary that is often so different from that of standard Indonesian and Malaysian and also because so many new words (both original and foreign) are quite easily incorporated into its increasingly wide vocabulary list.
However, as with any language, the constant changing of the times means that some words become rarely used or are rendered obsolete as they are considered to be outdated or no longer follow modern day trends.