The word "longhair" refers to a person with long and flowing hair. Antonyms for this word could include "shorthair," which would refer to someone with short hair. Another antonym could be "bald," which describes someone with little or no hair. "Cropped," "bobbed," and "buzzed" are also antonyms that describe different styles of short haircuts. "Straight" could also be an antonym, which refers to hair that is not curly or wavy. "Untangled," "neat," and "short-cropped" could also be antonyms that describe hair that is more manageable and easier to maintain compared to long hair.