English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.
"eighty-first." YourDictionary, n.d. Web. 09 December 2018. <https://www.yourdictionary.com/eighty-first>.
eighty-first. (n.d.). Retrieved December 09th, 2018, from https://www.yourdictionary.com/eighty-first
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.