A forced, artificial smile; a smile someone wears despite having no feelings of happiness or joy.
John seemed fine at first glance, but before long I could tell that he was wearing a plastic grin and that something was bothering him.
Look at his big plastic grin—he’s such a con man! I sure hope he doesn’t win the election.
Frequently Asked Questions (FAQs)
The idiom ‘plastic grin’ means “to deal with a difficult situation without being harmed or damaged”
Example usage of idiom ‘plastic grin’: Newspapers have weathered the storm of online information by providing news online themselves.