Word.ws English Dictionary

thirty-firsts

thirty-firsts is the plural of thirty-first.

Meaning of thirty-first

Noun

thirty-first (plural thirty-firsts)

  1. One of thirty-one equal parts of a whole.
    • A thirty-first of 620 is 20.
    Synonyms:
    thirty-oneth

See all 2 meanings of thirty-first

Questions about thirty-firsts

What is thirty-firsts the plural of?
Thirty-firsts is the plural of thirty-first.

Words near thirty-firsts in the dictionary

  1. thirty-eighths
  2. thirty-eleven
  3. thirty-fifth
  4. thirty-fifths
  5. thirty-first
  6. thirty-firsts
  7. thirty-five
  8. thirty-four
  9. thirty-fourth
  10. thirty-fourths
  11. thirty-leven

Source and license

Adapted from Wiktionary: thirty-firsts (page history and authors); thirty-first (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “thirty-firsts.” Word.ws, https://word.ws/thirty-firsts. Based on Wiktionary, CC BY-SA 4.0.