Definition of «fake smile»

A fake smile is a forced or insincere expression of happiness, often used to mask one's true emotions or intentions.

There's nothing worse than fake smiles on camera so smiling with your eyes is one of the most important things you can do. (dailymail.co.uk)
Because when I look in the audience I see a bunch of fake smiles so that when the camera hits them they look happy. (relevantmagazine.com)
And, telling everyone to fake a smile as a way to find happiness? (inc.com)
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