There are several synonyms for the phrase "get one wrong", which means to make a mistake or to misunderstand something. One synonym is "misinterpret", which implies that someone has misunderstood the meaning of something. Another synonym is "make an error", which suggests that someone has made a mistake that could have been avoided. "Miscalculate" is another synonym that implies someone has made a mistake related to numbers or measurement. "Miss" is a more general synonym for "get one wrong", implying that someone has failed to understand or perceive something correctly. Additional synonyms include "blunder", "screw up", "botch", "flub", and "foul up".