The antonyms for the word "dismounting" can be seen from a perspective of its opposite meaning, which is "mounting." Mounting refers to the act of getting on top of or attaching something onto a vehicle or a machine. On the other hand, dismounting implies the removal or detachment of something from a particular object. Therefore, the antonyms for dismounting can be words that signify mounting, such as attaching or fixing. Other antonyms that describe the action of mounting or getting onto something can include climbing, boarding, embarking, or ascending. These words represent the opposite action of dismounting, as they imply an upward movement or attachment to a specific object.