grin/smile from ear to ear

to look extremely happy.

We've had a fantastic response,' he said, grinning from ear to ear. (usually in continuous tenses)

• a short fuse
• a short sharp shock
• a shot across the bow
• a shotgun wedding
• a shot in the arm
• a shot in the dark
• a shoulder to cry on
• a shouting match
• a show-stopper
• a shrinking violet
• aside from
• aside from something
• a siege mentality
• as if own the place
• as if you own the place
• a sight for sore eyes
• a significant other
• a sign of the times
• a sine qua non
• a sinking feeling
• a sinking ship
• a sin tax
• as it comes
• as it stands
• a sitting duck