sly grin

Examples (10)

• He gave a sly grin when asked about the surprise party.
• She couldn't hide her sly grin as she revealed the secret.
• A sly grin spread across his face, indicating he knew more than he let on.
• The cat watched the mouse with a sly grin from under the table.
• If you want to keep it a secret, don't give such a sly grin!
• His sly grin suggested he had pulled off a successful prank.
• She had a sly grin that always made me wonder what mischief she was planning.
• With a sly grin, he admitted to knowing the answer all along.
• The detective noted the suspect's sly grin during the interrogation.
• You'll know he's up to something when you see that sly grin on his face.