Introvert - one who does not mingle with anyone. Extrovert - one who mingles with everyone. Controvert - one who opposes everyone with arguments.
contro+vert..contro[oppose] and vert[verbose]..controvert means oppose with words[arguements]
think it as CONTROVERSY
Legendary Mnemonic: Controvert=Contra+Verse=>Verse Against You=Contradict ...doesnt get simpler
a controversy is basically when some people start controverting against each other on certain issues