不三不四 [－－－－]

Jyutping bat1 saam1 bat1 sei3
Pinyin bù sān bù sì

Definitions (CC-CEDICT)
  1. dubious
  2. shady
  3. neither one thing nor the other
  4. neither fish nor fowl
  5. nondescript
Definitions (粵典–words.hk)
  1. 語句、書面語
    指一個​人​打扮​好​古怪​，​或者​一件​物件​設計​或者​功態​等等​同​一般​有​分別​，​唔​知似​乜​咁
    describing someone with a really weird, "out-there" appearance
  2. 近義詞
    不倫不類、唔三唔四
Definitions (Wiktionary)
  1. adj
    neither one thing nor the other; neither fish nor fowl
  2. adj
    dubious; questionable; shady
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）