What is the suffix of meticulously?

The suffix of "meticulously" is "-ly." In this case, "-ly" is an adverbial suffix that is added to the base Word "meticulous" to form an adverb. Adverbs modify verbs, adjectives, or other adverbs in a sentence to provide more information about how an action is performed. In this instance, "meticulously" describes the manner in which something is done with great attention to detail.