The morpheme "-ate" is typically added to a noun or an adjective to create a verb. In the case of the word "stimulus," adding "-ate" to the base form results in the verb "stimulate."
The morpheme "-ate" generally changes the part of speech of a word by converting it from a noun to a verb. In the case of the word "stimulus," adding the "-ate" suffix would result in the verb form "stimulate." This change transforms the word from a noun referring to something that provokes a response, to a verb meaning to cause someone or something to respond or react.
