dreiunddreißig

Dreiunddreißig is the German word for the cardinal number 33. It is formed from drei (three) + und (and) + dreißig (thirty). In German, numbers from 21 to 99 are typically constructed as the unit, followed by und, and then the tens, so 33 is commonly written as dreiunddreißig. The tens component dreißig is spelled with the Eszett (ß), which is used in German after long vowels or diphthongs according to orthographic rules.

In written form, the word is lowercase: dreiunddreißig. The number can also be represented in other numeral systems, such as Roman numerals XXXIII. As a mathematical value, 33 equals 3 × 11, making it an odd composite number and a semiprime.

Grammatical and lexical notes include the related ordinal form: dreiunddreißigste (the thirty‑third). This word is used across standard German in Germany, Austria, and most other German-speaking regions; regional pronunciation may vary slightly, but the spelling remains the same.