EU pair dancing round house in bliss (8)
I believe the answer is:
euphoria
'bliss' is the definition.
(I've seen this in another clue)
'eu pair dancing round house' is the wordplay.
'dancing' indicates an anagram.
'round' is an insertion indicator.
'house' becomes 'ho' (abbreviation for house).
'pair' with letters rearranged gives 'pria'.
'pria' going around 'ho' is 'phoria'.
'eu'+'phoria'='EUPHORIA'
'in' acts as a link.
(Other definitions for euphoria that I've seen before include "Intense feeling of happiness" , "Exaggerated elation?" , "Over-optimism" , "Irrational high" , "Feeling of general happiness" .)