Married, affectionate, though not initially poignant (6)
I believe the answer is:
moving
'poignant' is the definition.
(similar in meaning)
'married affectionate though not initially' is the wordplay.
'married' becomes 'm'.
'affectionate' becomes 'loving' (similar in meaning).
'though not initially' means to remove the first letter.
'loving' with its first letter taken away is 'oving'.
'm'+'oving'='MOVING'
(Other definitions for moving that I've seen before include "Arousing feelings of pity etc" , "Arousing strong emotion" , "Going to other places" , "Affecting" , "Poignant" .)