The antonyms for the word "ex-changing" include keeping, hoarding, holding, retaining, and withholding. While exchanging involves giving something in return for another, these antonyms all refer to the act of not giving away or sharing something. Keeping suggests holding onto something for oneself, while hoarding implies accumulating and collecting a large amount of something. Holding simply means keeping something in one's possession, while retaining refers to keeping something in one's memory or possession. Finally, withholding involves intentionally not giving or sharing something, often for personal gain or advantage. Knowing these antonyms can help provide a clearer understanding of the different ways in which exchanging can be interpreted.