Wearing ties more loosely (8)
I believe the answer is:
tiresome
'wearing' is the definition.
(I've seen this before)
'ties more loosely' is the wordplay.
'loosely' indicates anagramming the letters.
'ties'+'more'='tiesmore'
'tiesmore' is an anagram of 'TIRESOME'.
(Other definitions for tiresome that I've seen before include "Meteors I find annoying" , "Draggy - unamusing" , "Aggravating" , "irritating" , "Tedious and boring" .)