Old tales get translated (5)

I believe the answer is:

stale

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'old' is the definition.
(associated in meaning)

'tales get translated' is the wordplay.
'tales' anagrams to 'STALE'.
Though, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for stale that I've seen before include "no longer bearing interest?" , "No longer fresh" , "piss" , "Musty or hackneyed" , "Not fresh, being least" .)

I've seen this clue in The Mirror.

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