Definition

The number that comes after sixty-nine and before seventy-one, or the decade from 70 to 79.

Example

She celebrated her seventieth birthday with a big party.

Conversation

Did you know that my grandparents were born in the seventies?

Wow, that's interesting! They must have seen so many changes over the years.

Yeah, they often tell stories about life back then in the seventies.

I bet those stories are really fascinating!

Synonyms & Antonyms

Root Explanation

Seventy originates from the Old English 'seofontig', which is derived from 'seofon' (meaning seven) and the suffix '-tig' (meaning a group of ten). The word 'seventy' refers to a group of seven tens, or the number 70.

Memory Tip

Think of 'seven' and remember that 'seventy' means a group of seven tens.

Visually Confused Words