芒刺在背 [－－－－]

Jyutping mong4 ci3 zoi6 bui3
Pinyin máng cì zài bèi

Definitions (CC-CEDICT)
  1. feeling brambles and thorns in one's back (idiom)
  2. uneasy and nervous
  3. to be on pins and needles
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be jittery; to be on pins and needles
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）