: the number 30
thirties : the numbers ranging from 30 to 39
: a set of years ending in digits ranging from 30 to 39
What made you want to look up thirty? Please tell us where you read or heard it (including the quote, if possible).
Take Our 10-Question Quiz
The commonly misspelled words quiz
How strong is your vocabulary?
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes