[{"role": "user", "content": "I'm trying to learn some key phrases in Italian, including idioms. I'd appreciate it if you could help me with the translation of 'Stop whining.'"}, {"role": "assistant", "content": "The translation of 'Stop whining' in Italian is 'Smettila di frignare'. This is a very common idiom used to tell someone to stop complaining. If you want a more polite way to say it, you could use 'Basta lamentarsi'."}]