grinning
adjective
[ ˈɡrɪnɪŋ ]
• smiling broadly.
• "she looked at Mick's grinning face"
grin
verb
• smile broadly.
• "Dennis appeared, grinning cheerfully"
Similar:
smile,
smile broadly,
beam,
grin from ear to ear,
smile from ear to ear,
grin like a Cheshire cat,
smirk,
be all smiles,
Origin:
Old English grennian ‘bare the teeth in pain or anger’, of Germanic origin; probably related to groan.