(Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master; "under Roman law addiction was the justification for slavery"
an abnormally strong craving
being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
deliberately deviating from what is good; "there will always be a few people who, through macho perversity, gain satisfaction from bullying and terrorism"