MPa mental condition in which you feel very tired, usually caused by working too hard or by a difficult emotional problem
She smiled nervously.
Mike's nervousness showed in his voice.
WORD CHOICE: WORD CHOICE: nervous, anxious, annoyed, irritatedIf you are nervous, you cannot relax because you are worried about something that you have to do• I was nervous about my job interview. • He sounded really nervous when he first started speaking.If you are anxious, you are very worried about something that may happen or may have happened, over which you feel you have no control• When she didn't come home from school her parents began to get anxious.Do not use nervous to talk about angry feelings. Use annoyed or irritated.If you are annoyed, you feel slightly angry with someone because of what they have done• I was annoyed that he kept me waiting.If you are irritated, you are made slightly angry by something that keeps happening• Irritated by their giggling, he told them to be quiet.!! If someone is irritating you, you can say that they get on your nerves (NOT 'on your nervous')• His fidgeting is getting on my nerves.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.