eighty-oneth

English

Etymology

From eighty-one +‎ -th (ordinal suffix).

Pronunciation

• IPA^(key): /ˌeɪti ˈwʌnθ/

Adjective

eighty-oneth

1. (nonstandard) eighty-first
   • 1907, Garrett Serviss, The moon: a popular treatise, page 35:

     If the diameter of the moon were the same as that of the earth, a body weighing one pound on the earth would weigh only one eighty-oneth part of a pound on the moon.

Synonyms

• eighty-first