
die Nervosität
nervousness
A state of inner restlessness, tension, or anxiety, often before an important or difficult event.
Vor der Prüfung konnte sie ihre Nervosität kaum verbergen.
Before the exam, she could hardly hide her nervousness.
nervousness
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nervousness
A state of inner restlessness, tension, or anxiety, often before an important or difficult event.
Vor der Prüfung konnte sie ihre Nervosität kaum verbergen.
Before the exam, she could hardly hide her nervousness.
'Nervosität' (nervousness) is derived from the adjective 'nervös' (nervous). The ending '-ität' is often used with words of foreign origin to form an abstract noun.
Seine Nervosität vor dem Auftritt war deutlich spürbar.
His nervousness before the performance was clearly noticeable.
Common verbs used with 'Nervosität' (nervousness) are 'zeigen' (to show), 'verbergen' (to hide), 'ablegen' (to shake off), or 'bekämpfen' (to fight). You can also feel 'große' (great) or 'leichte' (slight) nervousness.
Er versuchte, seine Nervosität mit einem Lächeln zu verbergen.
He tried to hide his nervousness with a smile.
The preposition 'vor' describes the cause of a physical reaction ('vor Nervosität zittern' — to tremble with nervousness). The preposition 'aus' describes the reason for an action ('aus Nervosität einen Fehler machen' — to make a mistake out of nervousness).
Ihre Hände zitterten vor Nervosität.
Her hands were trembling with nervousness.
excitement / commotion
Aufregung and Nervosität can both refer to the tension felt before an important event. Aufregung can be positive, negative, or a mixture of both; Nervosität usually points to uncertainty or fear. Aufregung fits joyful anticipation, while Nervosität is more precise for anxious restlessness.

Vor dem ersten Arbeitstag spürte Amir wegen seiner Unsicherheit starke Nervosität.
Amir felt intense nervousness before his first day at work because of his uncertainty.
Vor dem ersten Arbeitstag spürte Amir eine freudige Aufregung.
Amir felt joyful excitement before his first day at work.