adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The person or thing in the ninetieth position.
2. 2
   position 90 in a countable series of things wordnet
3. 3
   One of ninety equal parts of a whole.

Adjective

1. 1
   The ordinal form of the number ninety. not-comparable

Adjective

1. 1
   the ordinal number of ninety in counting order wordnet

Synonyms

All synonyms

90th90th

Example

More examples

"Ever since her ninetieth birthday, my grandmother's been deaf as a post."

Etymology

From earlier ninteth, from Middle English nyntithe; for the modern form, see the etymological notes at twentieth.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.