The phrase "causes wonder" suggests that something is astonishing or remarkable. When looking for an antonym, we might seek words that convey the opposite sentiment, such as mundane, ordinary, or unremarkable. Other antonyms might include words that suggest something is expected or unsurprising, like predictable, anticipated, or normal. Similarly, terms like boring, unexciting, or routine could be considered opposites of "causes wonder" as they suggest something lacking in interest or excitement. Ultimately, antonyms for "causes wonder" depend on the context and the specific meaning of the original phrase, but words that convey a sense of predictability or routine are often good candidates.