onety-one

num

onety-one

num

Etymology From one + -ty + one, modelled after twenty-two, thirty-three, etc.

1

Nonstandard eleven

I know when that was. One thousand one hundred and onety-one !1899, William Makepeace Thackeray, The Wolves and the Lamb, page 11:

Derived terms: onety-oneth

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.