twenty-oneth

adj, noun — 2 senses

twenty-oneth

adj

/ˌtwɛnti ˈwʌnθ/

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

1

Nonstandard twenty-first

twenty-oneth

noun

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

1

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

average ministerial age of pastors 22 years and nineteen twenty-oneths; average pastoral age, 13 years and ten twenty-oneths1844, “VI. New London Association.”, in Minutes of the General Association of Connecticut, at their Meeting in New London: June, 1844., page Appendix, p. 32:

Synonyms: twenty-first

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