disgruntle

something which makes people grunt or complain

pig grunts!(OinK)=OK. disgrunt means not OK, i am not content

divide it like DISG(DISGUSSTING)+R+UNTLE(UNCLE)..so if your UNCLE says you something DISGUSSTING...you NO longer remain in GOOD MOOD,and become DISCONTENTED and start fighting with him.

disgruntle= dis (Not) + grUnt (replace U with A grAnt + le (take in Hindi)= If someone say u not take this grant which make u angry and dissatisfied.