Drunk to touch heart after diverting attention (5)
I believe the answer is:
tight
'drunk' is the definition.
(I've seen this before)
'to touch heart after diverting attention' is the wordplay.
'to touch' becomes 'tig' (to touch in the playground game of tig or tag).
'after diverting' is a deletion indicator (to divert is to send away).
'attention' becomes 'ear' (have the ear of someone is to have their attention).
'heart' with 'ear' taken out is 'ht'.
'tig'+'ht'='TIGHT'
(Other definitions for tight that I've seen before include "Squeezed" , "Drunk - under control" , "It's not enough" , "Mean - drunk" , "Mean; firmly fixed" .)