What part of speech is reduplicates?

Reduplicates can be categorized as a verb.

Parts of speech

1. reduplicates is a verb, present, 3rd person singular of reduplicate (infinitive).

Verb
reduplicate - form by reduplication; "The consonant reduplicates after a short vowel"; "The morpheme can be reduplicated to emphasize the meaning of the word"
reduplicate - make or do or perform again; "He could never replicate his brilliant performance of the magic trick"