Resentful granny finally hurt by current jibe (9)
I believe the answer is:
indignant
'resentful' is the definition.
(thesaurus)
'granny finally hurt by current jibe' is the wordplay.
'granny' becomes 'nan'.
'finally hurt' becomes 't' (I am not sure about this - if you are sure you should believe this answer much more).
'by' says to put letters next to each other.
'current' becomes 'in' ('in' can mean current or trendy).
'jibe' becomes 'dig' (synonyms).
'nan'+'t'='nant'
'in'+'dig'='indig'
'nant' put after 'indig' is 'INDIGNANT'.
Can you help me to learn more?
(Other definitions for indignant that I've seen before include "Felling anger over something wrong or unjust" , "Taking umbrage" , "feeling anger" , "to get angry" , "Affronted by perceived injustice" .)