The word "more impeachable" implies a degree of misconduct that can be questioned or accused of. However, to express an opposite meaning, antonyms for this term can be used. Words such as "innocuous," "faultless," "irreproachable," or "blameless," all convey a sense of irreproachability, innocence and the absence of misconduct. Moreover, "pure," "virtuous," "incorruptible," and "unimpeachable" can be used to suggest the highest level of integrity and ethical conduct. Still, antonyms for "more impeachable" may also include "honorable," "upright," "trustworthy," and "credible," all of which denote the absence of any wrongdoing that can be condemned or criticized.