Wise eccentric in panties (7)

I believe the answer is:

sapient

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'wise' is the definition.
(similar in meaning)

'eccentric in panties' is the wordplay.
'panties' can be anagrammed to 'SAPIENT'.
Though, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for sapient that I've seen before include "Literary word for wise" , "Panties (anag)" , "Canny" , "Snipe at (anag.)" , "of great wisdom" .)

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