Handing over or handing to refers to the act of transferring something to someone or passing it on. Therefore, antonyms for this term would involve different ways of holding back or retaining control over something. Antonyms could include withholding, keeping, retaining, holding onto, confiscating or taking away. For instance, one can withhold information or resources from someone or keep them locked away. Alternatively, one may confiscate treasures or possessions from another person or take away privileges or rights. Antonyms for handing over may generally imply a lack of trust or a desire to maintain control over something important.