Dug attire out in appreciation (9)
I believe the answer is:
gratitude
'appreciation' is the definition.
(thesaurus)
'dug attire out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'dug'+'attire'='dugattire'
'dugattire' anagrammed gives 'GRATITUDE'.
'in' is the link.
(Other definitions for gratitude that I've seen before include "feeling of obligation" , "A sense of indebtedness and thankfulness" , "Appreciation of kindness" , "Thanks" , "Feeling of appreciation" .)