The antonyms for "sucked up" include "spit out", "ejected", "expelled", "rejected", "disowned", "disavowed", "denied", "discarded", and "disregarded". These words represent the opposite of what "sucked up" implies, which is to take in, accept or praise something or someone. When you reject or discard something, it shows that you do not agree with it, or that you do not want it. Ejecting or expelling something or someone means to forcefully throw them out or reject them. Therefore, the antonyms of "sucked up" show a clear contrast in meaning, indicating that not everything can be accepted or praised.