What is a figure by which permission is either seriously or ironically granted to some one, to do what he proposes to do; e. g., "He that is unjust, let him be unjust still." called?

epitrope — A figure by which permission is either seriously or ironically granted to some one, to do what he proposes to do; e. g., "He that is unjust, let him be unjust still.". (Webster's 1913.)

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