The word "dappest" implies a sense of stylishness and immaculate grooming. The antonyms for this word, on the other hand, suggest the opposite. Words like "sloppy," "untidy," "unkempt," and "disheveled" connote a lack of care for one's appearance. Someone who is "unfashionable," "frumpy," or "outdated" may not be fashionable or up-to-date on the latest trends. Others may use words like "shabby," "neglected," or "unpolished" to describe an individual who is not well-groomed or tidy. Antonyms for dappest represent a spectrum of untidiness, from being unkempt to being completely disorganized or outdated.