Step-by-step explanation:
The morphemes of the word "WAITER" are "WAIT" and "-ER".
The morpheme "WAIT" is a free morpheme, which means it can stand alone as a word and has its own meaning. In this case, "WAIT" means to stay in one place until someone or something arrives or to delay an action until a particular time or event.
The morpheme "-ER" is a bound morpheme, which means it cannot stand alone as a word and must be attached to a free morpheme to create a new word. In this case, "-ER" is a suffix that is added to "WAIT" to create the word "WAITER", which refers to a person who serves food and drinks in a restaurant or cafe.
Therefore, "WAIT" is the root or base morpheme, and "-ER" is the derivational morpheme that changes the meaning of the base morpheme to create a new word.