Eavesdrops, somehow, when disregarded (6,4)
I believe the answer is:
passed over
'disregarded' is the definition.
(I've seen this before)
'eavesdrops somehow' is the wordplay.
'somehow' indicates anagramming the letters.
'eavesdrops' anagrammed gives 'PASSED OVER'.
'when' acts as a link.
(Other definitions for passed over that I've seen before include "Disregarded" , "ignored" , "not taken into consideration" .)