Abstract
The study entitled The Use of Online Slang for Independent Learning in English Vocabulary. It aims to analyze the types of slang words, the media that influence the learners to use slang words. This study also investigates the reason why the learners used slang words. This study used Elisa Mattielo (2008) theory to analyze the types of slang words used by learners. The data were collected from questionnaires and interviews. The finding shows that there are two types of slang words which were commonly used by learners; they are Informality and Debasement and Vulgarity and Obscenity. The Informality and Debasement were commonly used by learners to express informal words with their close friends. The Vulgarity and Obscenity were usually used to express their anger to their friends such as fool, bitch, fuck, damn, motherfucker, holly shit, and goddamn. Further, it was found that the internet, social media, movies, and songs were the media and the sources which the learners can access to learn slang words through independent learning. The learners used slang words to be humorous, creative, attractive, joy, and even just to follow what friends do. In addition, this can add the learners' vocabulary of English words.