thirtieth
1 synonym for thirtieth, grouped by meaning and by how common each one is.
Adjective — Coming number thirty in a series.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
30th
How to use thirtieth
The word patterns that sound natural to a native speaker.
thirtieth birthday
thirtieth anniversary
thirtieth of June
thirtieth place
It is a standard word, often written as 30th in dates.
Etymology
The modern form comes from earlier thirteth, which came from Middle English and before that from Old English. It is built from thirty plus the ending -eth.
Full origin of thirtieth →Frequently asked questions
How do you write thirtieth as a number?
You can write it as 30th.
What does thirtieth mean?
It is the ordinal form of thirty, meaning number thirty in a sequence. As a noun it can also mean one of thirty equal parts.
How do you spell thirtieth?
It is spelt t-h-i-r-t-i-e-t-h, with the y of thirty changing to ie.
