The word "more beanstalk" doesn't have any antonyms as it is a phrase and not a single word. Beanstalk is a noun that refers to a stem of a bean plant, usually tall and slender. More is an adjective that describes an increased quantity or degree. Therefore, there isn't a direct opposite for the phrase "more beanstalk." However, the antonyms for "more" include "less," "fewer," and "under," while antonyms for "beanstalk" include "short," "stumpy," and "dwarf." It's essential to note that antonyms come in pairs, and they are words with opposite meanings. In conclusion, there are no antonyms for the phrase "more beanstalk.