Unexciting? Accordingly cut line (4)
I believe the answer is:
dull
'unexciting?' is the definition.
('dull' is associated in meaning with 'unexciting')
'accordingly cut line' is the wordplay.
'accordingly' becomes 'duly'.
'cut' means to remove the last letter.
'line' becomes 'l'.
'duly' with its last letter taken away is 'dul'.
'dul'+'l'='DULL'
(Other definitions for dull that I've seen before include "Not shiny; uninteresting" , "Overcast or uninteresting" , "Not bright or shiny" , "Dreary" , "Constable?" .)