百無一是 [－无－－]

Jyutping baak3 mou4 jat1 si6
Pinyin bǎi wú yī shì

Definitions (Wiktionary)
  1. phrase, idiomatic
    having no redeeming features
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）