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Glite Dictionary
3️⃣ Number 30 in order 3️⃣ The 30th position
thirtieth

thirtieth

2 1.0
The position that is number thirty in a list
  • noun
  • /ˈθɜrtiəθ/
translation icon : trigésimo
  • I celebrated my twenty-ninth birthday shortly after leaving the nursing home, and I'll proudly celebrate my thirtieth this year.

Examples

  • "The following Monday, May the thirtieth, was a bank holiday.

    Fiction book (1996)

  • I met her for a drink on January thirtieth at the Pierre.

    Fiction book (1991)

  • Thirtieth of January, to be precise.

    Doctor Dolittle (1967)

  • On the thirtieth of the month, they would sail on the regularly scheduled liner.

    Fiction book (1995)

  • "It's December thirtieth, Ave," Fleeta announces, confusing me.

    Fiction book (2000)

  • The meeting is scheduled for the thirtieth of this month.

  • She will celebrate her birthday on the thirtieth.

  • The project deadline is set for the thirtieth day of June.

Synonyms

30th
vsthirtieth
53 1.0

The position that comes after the twenty-ninth in a list

is written in full word form rather than as a numeral

Surface Forms

thirtieth singular
thirtieths plural

Morphology

thirtieth = thirty (transparent) = thirty + eth

The suffix '-eth' is a standard ordinal marker in English, making the meaning clear.

Etymology

The word thirtieth comes from the number thirty plus the ending -th that turns a number into its place in order, and thirty itself is just three times ten. So thirtieth means 'the one in position thirty'.