Prepared a bit of tea? No longer fresh (7)

I believe the answer is:

attired

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'prepared' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'a bit of tea? no longer fresh' is the wordplay.
'bit of' suggests taking the first letters.
'no longer fresh' becomes 'tired' (tired can mean cliched or not fresh).
The initial letter of 'tea' is 't'.
'a'+'t'+'tired'='ATTIRED'

Can you help me to learn more?

(Other definitions for attired that I've seen before include "got up" , "Dressed or clothed" , "Wearing clothes" , "Turned out" , "surrounded by duds" .)

I've seen this clue in The Independent.

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