Meanings
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1
adv
at any time; whenever it is convenient or possible
You can call me anytime if the symptoms return.
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2
intj
used informally to say that one is willing to help again after being thanked
Thanks for carrying those boxes. Anytime!
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3
adj
suitable for or available at any time
The cafe added an anytime breakfast menu for late-shift workers.
Thesaurus
Etymology
From the phrase any time, continuing Middle English any time and Old English aenigum timan. The solid spelling became established for the adverb, while the two-word form remains common after a preposition and in more formal writing.