Added 10 October 2026
thirtieth
/ˈθɜːti.əθ/ noun
In Latin: trīcēsimus Wiktionary
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about thirtieth at Wordnik → Where our words come from →
adjective
- Coming next after the twenty-ninth in position.
Origin
From earlier thirteth, from Middle English thrittithe, threttiþe, thrittyde, from Old English þrītigoþa; equivalent to thirty + -eth. For the modern form, see the etymological notes at twentieth.
From Wiktionary, via Kaikki.org (CC BY-SA)