The phrase "crawl all over" can be used to describe when someone or something is completely covered or surrounded by a large number of small creatures or objects. Some antonyms for this phrase might include "sparse," "unpopulated," "uninhabited," or "desolate." These words convey a sense of emptiness or lack of activity, as opposed to the bustling energy implied by "crawl all over." Other antonyms might include "clean," "clear," or "tidy," which suggest a sense of order and organization, rather than the chaotic jumble of things that might be implied by the original phrase.