noun (used with a singular verb)
The Longest English WordsThese words are unpronounceable, unreadable, and for most of us unusable ... but that doesn't mean we don't want to know what they are!
Origin of diachronic linguistics
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019