DIY nut’s erratic and far from neat (6)
I believe the answer is:
untidy
'far from neat' is the definition.
(I've seen this before)
'diy nut's erratic' is the wordplay.
'erratic' indicates anagramming the letters.
'diy'+'nut'='diynut'
'diynut' with letters rearranged gives 'UNTIDY'.
'and' acts as a link.
(Other definitions for untidy that I've seen before include "Cluttered" , "Not neat or orderly" , "Disorderly, dishevelled" , "Higgledy-piggledy" , "Slovenly, unkempt" .)