忸怩不安是指内心感到不安，表现出局促不安的样子。这种情绪通常是由于担心或焦虑引起的，也可以描述为羞愧、尴尬或紧张的感觉。忸怩不安可以用来形容一个人的情绪状态，也可以形容一种行为表现。

How to pronounce: [niǔ ní bù ān]

Usage:

1. 作为形容词使用时，忸怩不安可以用来描述一个人内心感到的焦虑、紧张或羞愧的情绪状态。

2. 作为动词使用时，忸怩不安表示一个人在行为上表现出紧张、局促不安的样子。

Example sentences:

1. She was feeling very 忸怩不安 when she had to give a speech in front of a large audience.

她在大庭广众面前发表演讲时感到非常忸怩不安。

2. He couldn't help but feel 忸怩不安 as he walked into the interview room.

当他走进面试室时，他禁不住感到忸怩不安。

3. The little boy looked 忸怩不安 as he tried to explain why he broke the vase.

小男孩试图解释自己打破花瓶的原因时显得很忸怩不安。

4. She felt a sense of 忸怩不安 as she realized she had forgotten her lines in the middle of the play.

她意识到自己在表演中忘记了台词，感到一种忸怩不安的情绪。

5. His 忸怩不安 behavior made it clear that he was hiding something.

他局促不安的行为表明他在隐瞒什么。

Synonyms and usage:

1. 羞愧 (shy, embarrassed)

2. 尴尬 (awkward, uncomfortable)

3. 紧张 (nervous, tense)

4. 不安 (uneasy, restless)

5. 心神不宁 (anxious, uneasy)

Editor's summary:

忸怩不安是指内心感到焦虑、紧张或羞愧的情绪状态，也可以形容一种行为表现。作为形容词使用时，可以用来描述一个人内心的情绪状态；作为动词使用时，则表示一个人在行为上表现出紧张、局促不安的样子。同义词包括羞愧、尴尬、紧张、不安和心神不宁。