Faint, being now so distracted (5)
I believe the answer is:
swoon
'faint' is the definition.
('swoon' can be a synonym of 'faint')
'now so distracted' is the wordplay.
'distracted' indicates anagramming the letters.
'now'+'so'='nowso'
'nowso' is an anagram of 'SWOON'.
'being' is the link.
(Other definitions for swoon that I've seen before include "Pass out" , "Faint (with emotion)" , "experience ecstasy" , "Lose consciousness" , "Display of extreme emotion" .)