This study is concerned with derivational morphemes. The derivational morpheme is divided into two types, namely the prefix and the suffix, both of which are found in Donald Trump’s inauguration speech. In conducting this research, descriptive qualitative methods were used. The data consisted of transcripts of Donald Trump’s inaugural speech analyzed based on the derivational morpheme. The results of data analysis showed that there were 17 prefixes found in Donald Trump’s inauguration speech (27%), which can be divided into six types: re-, un-, en-, dis-, im-, and pre. There were 46 suffixes found in Donald Trump’s inaugural speech (73%). So, in total there were 63 derivational morphemes and the suffix was more dominant than the prefix.
Keywords: Derivational, prefix, suffix, inauguration speech