neidisch
jealous / envious
Feeling envy; wanting to have or be able to do something that another person has or can do. Often connected with resentment.
Sie war neidisch auf den Erfolg ihrer Kollegin.
She was jealous of her colleague's success.

jealous / envious
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jealous / envious
Feeling envy; wanting to have or be able to do something that another person has or can do. Often connected with resentment.
Sie war neidisch auf den Erfolg ihrer Kollegin.
She was jealous of her colleague's success.

The adjective 'neidisch' (jealous/envious) belongs to the noun 'der Neid' (envy). If you know the noun, you can easily figure out the meaning of the adjective.
Sein Neid auf den Kollegen war für alle offensichtlich.
His envy of his colleague was obvious to everyone.
'Neidisch' (jealous/envious) is almost always used with the preposition 'auf' and the accusative. The structure is: Person A ist neidisch auf Person B or a thing.
Ich bin ein bisschen neidisch auf dein neues Fahrrad.
I'm a little jealous of your new bike.
A common action connected with this feeling is wanting to 'jemanden neidisch machen' (make someone jealous/envious). The adjective is often softened or intensified by adverbs like 'heimlich' (secretly), 'ein bisschen' (a little), or 'ziemlich' (quite).
Er postete Urlaubsfotos, nur um seine Freunde neidisch zu machen.
He posted vacation photos just to make his friends jealous.
satisfied
'zufrieden' and 'neidisch' describe two very different attitudes. Someone who is 'zufrieden' is content with their own situation. Someone who is 'neidisch' looks at something that another person has or can do and wants to have or be able to do it too. So the contrast lies in the view of what is your own and what belongs to others: 'zufrieden' means that you do not miss anything; 'neidisch' means that you see something in others and wish you had it.

Nach der Arbeit ist Yusuf neidisch auf seine Freunde, die schon Urlaub haben.
After work, Yusuf is jealous of his friends who are already on vacation.
Zu Hause bist du mit einem einfachen Abendessen zufrieden.
At home, you are satisfied with a simple dinner.