What does "twenty-oneth" mean?

A fractional part of twenty-one, a twenty-first

What is a synonym for "twenty-oneth"?

Common synonyms include: twenty-first.

Pronounced //ˌtwɛnti ˈwʌnθ//.

//ˌtwɛnti ˈwʌnθ// adj, noun

adj, noun ·Rare ·Advanced level

Noun

1
A fractional part of twenty-one, a twenty-first nonstandard
"average ministerial age of pastors 22 years and nineteen twenty-oneths; average pastoral age, 13 years and ten twenty-oneths"

Adjective

"average ministerial age of pastors 22 years and nineteen twenty-oneths; average pastoral age, 13 years and ten twenty-oneths"

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.