Meaning : An improbable and unexpected victory.
Example :
The biggest upset since David beat Goliath.
Synonyms : upset
Meaning : Cause the downfall of. Of rulers.
Example :
The Czar was overthrown.
Subvert the ruling class.
Synonyms : bring down, overthrow, subvert
Meaning : Change radically.
Example :
E-mail revolutionized communication in academe.
Synonyms : revolutionise, revolutionize
Overturn ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Overturn ka matlab kya hota hai?