numeral
seventy
A1
siebenzig: cardinal numeral meaning 'seventy' (70). In standard German the usual form is 'siebzig' (the 'en' often dropped). Used in counting and in compounds (e.g., einundsiebzig = 71). As a numeral it precedes nouns or functions adverbially in dates and quantities.
Examples
Mein Großvater ist siebenzig Jahre alt.
My grandfather is seventy years old.
Der Betrieb beschäftigte siebzig Mitarbeiter, weil die Nachfrage stark stieg.
The company employed seventy workers because demand rose sharply.
Details
Mnemonics
Imagine the number 70 on a birthday cake with seven candles in a row and a zero.
Sounds like 'seven-ty' — think 'seven' + 'ty'.