Definition

The number that comes after eighty-nine and before ninety-one, or the period of time from 90 to 99 years old.

Example

My grandparents are in their nineties, enjoying life to the fullest.

Conversation

Did you know my grandparents are in their nineties now?

Wow, that's impressive! They must have so many stories to tell.

Yeah, they often talk about life in the nineties and how things have changed.

I can only imagine! It must be fascinating to hear their experiences.

Synonyms & Antonyms

Root Explanation

Ninety → It originates from the Old English 'nigontig', which is a combination of 'nigon' (meaning nine) and '-tig' (meaning a group of ten). The word 'ninety' refers to the number that is nine groups of ten.

Memory Tip

Think of 'nine' and remember that 'ninety' means nine groups of ten.

Visually Confused Words