Bizarre and stupid quarrels with no origin (7)
I believe the answer is:
surreal
'bizarre' is the definition.
(I've seen this in another clue)
'stupid quarrels with no origin' is the wordplay.
'stupid' indicates an anagram (in a stupid order).
'with no origin' means to remove the first letter.
'quarrels' with its first letter taken away is 'uarrels'.
'uarrels' with letters rearranged gives 'SURREAL'.
'and' is the link.
(Other definitions for surreal that I've seen before include "Involving fantastical imagery" , "Weird; dreamlike" , "Dreamlike, bizarre" , "Outlandish" , "strange" .)