" unstylish "

1: marked by an obvious lack of style or good taste;

  * e.g., " ... chose a bizarrely unstylish hairstyle for the Halloween party "

•  Synonyms : 

•  cheesy,

•  dowdy,

•  inelegant,

•  styleless,

•  tacky,

•  tasteless,

•  ticky-tacky,

•  trashy,

•  unfashionable

•  Antonyms : 

•  chic,

•  classic,

•  classy,

•  elegant,

•  exquisite,

•  fashionable,

•  fine,

•  posh,

•  ritzy,

•  smart,

•  sophisticated,

•  stylish,

•  tasteful