ANGLO-SAXON PREFIX 5 5. UN-: "not," "lak of," "do the opposite of," "remove or release from" unabridged not abridged; not made shorter; complete unbiased not biased; not prejudiced in favor of or against; fair unconcern lack of concern; anxiety; or interest; indifference undeceive free from deception; or mistaken ideas; set straight ungag remove a gag from; release from cencorship unnerve depri..