The phrase "act graciously" is correct and usable in written English.
You can use it when advising someone to behave in a kind, polite, or generous manner, especially in challenging situations.
Example: "Even when faced with criticism, it's important to act graciously and maintain your composure."
Alternatives: "behave kindly" or "conduct yourself with grace."
Since when does a mayor act graciously toward someone who has criticized him?
When people leave a company, said Julia Gilbert, a recruiting consultant with the Oxbridge Group, "it's a chance for you to either act your most immature -- to take advantage of this tense moment -- or it is an opportunity to act graciously and gracefully.
"The trick is to weather them, learn from them, act graciously through them, and learn why and when you have to change".
Meanwhile, in Clinton's last act in office, he graciously extended the hand of presidential mercy to rogue fraudster-cum-megadonor Marc Rich.
The idea that we were going to see the riots played out in front of us made us giddy, like strangers had graciously decided to act out our childhood home movies.
When you meet a family-by-adoption, please act normally, treating the family as graciously as you would any other.
Jibril had imprisoned many Hamas activists in his time, but now he acted the part of the defeated opponent graciously offering advice to his successors.
In Vanity Fair last year Mr. Hamill graciously described a new generation of patrons, "trying on their acts, lying and disputing and laughing".
Having caught his act a couple of times, it was a real treat to see rock's royal raconteur graciously share the stage with the two twenty-something women in Denver, my first chance to witness their live performance.
And Namath, knowing he had acted boorishly, called Kolber to apologize for putting her in an awkward position, and she graciously accepted.
Mrs. Prentiss graciously consents.
