numeral
thirty
A1
Dreißig means 'thirty' and is the cardinal numeral for 30. It functions as an adjective (dreißig Euro) or as a standalone numeral (Ich bin dreißig). No auxiliary or irregular forms beyond regular numeral usage. Spelling uses 'ß' in standard German orthography.
Examples
Die Firma zahlte jedem Mitarbeiter dreißig Euro Bonus, weil die Produktion die Erwartungen übertraf.
The company paid every employee a thirty-euro bonus because production exceeded expectations.
Der Kaffee kostet dreißig Euro.
The coffee costs thirty euros.
Details
Mnemonics
Visualize the number 30 with three tens to link 'dreißig' to thirty.
Hear 'dry-sick'—imagine thirty dry days; connects to 'drei' (3) + 'ßig' (= -ty).
Notes
'dreißig' is the standard German word for 30; the 'ß' corresponds to a double s sound.