不稂不莠 [－－－－]

Jyutping bat1 long4 bat1 jau5
Pinyin bù láng bù yǒu

Definitions (CC-CEDICT)
  1. useless
  2. worthless
  3. good-for-nothing
Definitions (Wiktionary)
  1. phrase, idiomatic
    useless; worthless; good-for-nothing
    (syn.) 不郎不秀