Oxford Advanced American Dictionary

Definition of any time adverb from the Oxford Advanced Learner's Dictionary

any time

adverb
any time pronunciation English any time pronunciation American
(British English) (also anytime North American English, British English)
 
at a time that is not fixed
Call me any time.
Idioms

anytime soon

(North American English) used in negative sentences and questions to refer to the near futureWill she be back anytime soon?