Wed, hitched (7)
I believe the answer is:
married
This clue is a double definition.
'wed' is the first definition.
(similar in meaning)
'hitched' is the second definition.
(I've seen this in another clue)
(Other definitions for married that I've seen before include "Spliced" , "Closely linked" , "United in match" , "Wedded" , "Not single" .)