Shakespeare uses oxymorons to reconcile or synthesise opposites. This is especially noticeable in the speech of Iago. It is in this spirit of contradiction that Iago infects Othello and turns the general’s reality on its head. Thus, in the middle of the play Othello begins to employ the animal and vermin imagery previously reserved for Iago.
In Act I of Othello, Brabantio says:
In Act II, Desdemona says:
In Act III, Othello says:
In Act IV, Emilia says:
In Acts V, Iago says: