I regret that a previous engagement prevents me from accepting your kind invitation.
You have a standing invitation to join us.
The invitation said, "No gifts, please."
I addressed the envelope containing the invitation.
I received invitation.
Thank you for the generous invitation but we don't want to wear out our welcome.
I didn't want to go, but she had been so kind to me that I couldn't but accept the invitation.
Robert was so busy he had to turn down an invitation to play golf.
He often turned up at parties without an invitation in his days.
Fortunately, I managed to overcome this difficulty in getting an invitation from a student organization.
I got an invitation to a party tonight that I know would be a lot of fun but I have to be in my best form for tomorrow's meeting so I had to turn it down.
When was the last time you had the invitation to the wedding?
The article was an invitation for public protest against the newspaper.
used to tell someone that you cannot accept an invitation now, but would like to do so at a later time:
His smile was an invitation to dance with him