There are several synonyms for the word "mistiming". Some popular options include "miscalculation", which implies an error in judgment or timing, and "miscue", which connotes a mistake or error in execution. Other possible synonyms include "misjudgment", "misstep", "mistake", and "oversight". Each of these words carries a slightly different connotation, but all refer to a situation in which timing or judgment has been off, resulting in negative consequences. By using one of these synonyms for "mistiming" in your writing, you can add variety and nuance to your language choices.