Definition from macmillandictionary.com
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The government is promising a formal investigation.
They have offered me the job, but I don’t yet have a formal contract.
We intend to make a formal written complaint.
When we first met, he was a little stiff and formal.
Business letters do not always have to be impersonal and formal.
‘Ameliorate’ is a more formal way of saying ‘improve’.
The Queen will be the host at a formal dinner tonight.
She’s got a lot of experience but no formal qualifications.
the formal innovations in Mozart’s music