色厲內荏 [－厉内－]

Jyutping sik1 lai6 noi6 nam4
Pinyin sè lì nèi rěn

Definitions (粵典–words.hk)
  1. 形容詞
    表面​強硬​，​實則​好​怯​，​靠嚇​。
    appear to be tough but to be timid inwardly
    • 為咗掩蓋內心嘅虛怯，佢哋表現得更色厲內荏。
      为咗掩盖内心嘅虚怯，佢哋表现得更色厉内荏。
      They are just trying to make themselves look tougher in order to cover their fear inside.

色厲內荏 [－厉内－]

Jyutping sik1 lai6 noi6 jam5
Pinyin sè lì nèi rěn

Definitions (CC-CEDICT)
  1. lit. show strength while weak inside (idiom); appearing fierce while cowardly at heart
  2. a sheep in wolf's clothing
Definitions (Wiktionary)
  1. phrase, idiomatic
    to appear tough on the outside but be weak and timid on the inside
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    为咗掩盖内心嘅虚怯，佢哋表现得更色厉内荏。
    為咗掩蓋內心嘅虛怯，佢哋表現得更色厲內荏。
    • They are just trying to make themselves look tougher in order to cover their fear inside.