The word "闪开" is formed by combining the character "闪", which itself is composed of the radical "门" (door) and "人" (person) to suggest a quick, dodging movement, with the character "开", meaning to open or to move aside. Together, these characters semantically merge to create a verb meaning "to get out of the way", where "闪" provides the sense of rapid motion and "开" denotes the action of clearing a path or creating space.