Seventhly
Seventhly is an adverb used to introduce the seventh item in a list or series. It is derived from the ordinal number "seventh," indicating position or order. The word functions as a transitional word, signaling a shift in focus to the next point being discussed. Its primary purpose is to maintain clarity and organization in spoken or written discourse, particularly when enumerating multiple points or arguments.
While "seventhly" is a grammatically correct and functional word, its usage is often considered somewhat formal