Definition of naughties:
(n) :
(informal) Naughty people or things.
(n) :
Alternative form of noughties (“first decade of a century”). [(chiefly UK, sometimes capitalized) The decade consisting of the last year of the previous century and the first nine years of the next: from 1900 to 1909, 2000 to 2009, etc.]
(n) :
Alternative letter-case form of naughties (“first decade of a century”). [(informal) Naughty people or things.]