I had to restrain rattier drunk becoming angry (9)
I believe the answer is:
irritated
'angry' is the definition.
(thesaurus)
'i had to restrain rattier drunk' is the wordplay.
'i had' becomes 'id' (I'd).
'to restrain' is an insertion indicator.
'drunk' indicates an anagram.
'rattier' anagrammed gives 'rritate'.
'id' going around 'rritate' is 'IRRITATED'.
'becoming' is the link.
(Other definitions for irritated that I've seen before include "Irked" , "Stimulated" , "Cross" , "rubbed up the wrong way" , "Annoyed" .)