The word "most assaulting" implies a sense of violence, aggression, and attack. Antonyms for this word would be gentler and more peaceful terms such as "calming," "soothing," or "pleasant." Alternatively, words like "yielding," "submissive," and "obedient" can also be used as antonyms of "most assaulting" as they signify surrender, compliance, and non-aggressive behavior. Other antonyms that can be used for "most assaulting" are "mild," "soft," "benign," and "non-threatening." With these alternatives, the meaning of the sentence changes entirely, conveying a peaceful aspect instead of a violent one.