The antonyms for the word "dynamisms" are sluggishness, lethargy, and inactivity. Dynamisms typically describe the quality of being dynamic or active, which is the opposite of being inactive. However, sometimes we need to describe a situation where something is not very active or productive. For example, if you're describing a team that's not performing well, you might say that they lack dynamisms. On the other hand, if you're describing a team that's high-performing and always on the go, you might say that they have great dynamisms. In conclusion, using an antonym to describe dynamisms can be helpful in certain situations, depending on the context.