Horrified husband's gripped by stoves temperature (6)
I believe the answer is:
aghast
'horrified' is the definition.
(thesaurus)
'husband's gripped by stoves temperature' is the wordplay.
'husband' becomes 'h'.
'gripped by' indicates putting letters inside.
'stoves' becomes 'agas' (I've seen this before).
'temperature' becomes 't' (abbreviation).
'h' placed within 'agas' is 'aghas'.
'aghas'+'t'='AGHAST'
(Other definitions for aghast that I've seen before include "Horror-struck" , "Taken aback with horror" , "Appalled, filled with consternation" , "Deeply dismayed" , "Stupefied with horrer" .)