The word "puts alongside" refers to the act of placing something beside another thing. Its antonyms include "separates," "divides," "dissociates," and "detaches." Separating means to pull things apart, while dividing means to split them into parts. Dissociating means to break the connection between things, and detaching means to remove things from each other. Other antonyms for "puts alongside" include "isolates," "disconnects," "disjoins," and "disengages." While "puts alongside" implies a sense of togetherness, these antonyms all suggest a sense of separation or distance between objects.