The initial idioms of the letter S

smart money	smart mouth
smart off	smart set
smart under	smart-ass
smarten up	smart-mouth (someone)
smarts	smarty
smarty-pants	smash
smash (something) to smithereens	smash face in
smash hit	smash in
smash into	smash out of
smash through	smash up
smashed	smash the teapot
smashing	smear
smear campaign	smear on
smear with	smeared
smeg	smell