Used to indicate acknowledgement or acceptance.
A correct response.
Free from error; true; accurate.
With good manners; well behaved; conforming with accepted standards of behaviour.
To make something that was wrong become right; to remove error from.
To discipline; to punish.
To inform (someone) of their error.
To grade (examination papers).
A shout of encouragement; a cheer, which can also be interpreted to mean "may [idea or person] live forever", in praise of a leader.