This study investigated and analyzed the expletives, buzz-words, and teenage slangs in adolescents’ spoken language, providing specific lists and frequencies of expletives, buzz-words, and teenage slangs and their usage patterns according to school level and gender. The results are as follows:|||| Firstly, the adolescents use of expletives was examined. They used adverbs of degree and exclamations with a vulgar feel such as “??????, ??????, ???-, and ???-” a lot. Most of the virotous expletives had to do with sex, and the frequency of those words increased with school level. The girls were not much different from the boys in the use of sex-related expletives.|||| Secondly, the adolescents also used a lot of adverbs of degr...