Erotesis
Erotesis , noun
[New Latin, from Greek {not transcribed} a questioning, from {not transcribed} to ask.]
(Rhetoric) A figure of speech by which a strong affirmation of the contrary, is implied under the form of an earnest interrogation, as in the following lines; -
Must I give way and room to your rash choler?
Shall I be frighted when a madman stares?