Trying more ties out (8)
I believe the answer is:
tiresome
'trying' is the definition.
(I've seen this before)
'more ties out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'more'+'ties'='moreties'
'moreties' with letters rearranged gives 'TIRESOME'.
(Other definitions for tiresome that I've seen before include "So metier may be boring (8)" , "irritating" , "Is remote, being boring" , "Annoying, being a nuisance" , "Causing boredom" .)