| seagull manager | | | |
| sea legs | | | |
| sea load | | | |
| seal the deal | | | |
| seat-of-the-pants | | | |
| second banana | | | |
| second childhood | | | |
| second fiddle | | | |
| second gear | | | |
| second nature | | | |
| second-rate | | | |
| second string | | | |
| second Tuesday of the week | | | |
| secretary spread | | | |
| see a man | | | |
| see a man about a dog | | | |
| see a man about a horse | | | |
| see daylight | | | |
| see eye to eye | | | |
| see for oneself | | | |
| seeing is believing | | | |
| see into a millstone | | | |
| see one's way clear to | | | |
| see past the end of one's nose | | | |
| see red | | | |
| see someone's etchings | | | |
| see something green in one's eye | | | |
| see stars | | | |
| see the dark side of the moon | | | |
| see the forest for the trees | | | |
| see the light | | | |
| see the light of day | | | |
| see the trees through the forest | | | |
| see the wood for the trees | | | |
| see things | | | |
| see through | | | |
| see what sticks | | | |
| see which way the cat jumps | | | |
| see with half an eye | | | |
| see yellow | | | |
| see you later | | | |
| see you next Tuesday | | | |
| seismic shift | | | |
| seize the day | | | |
| seize the opportunity | | | |
| self-contained | | | |
| self-possession | | | |
| sell bargains | | | |
| sell-by date | | | |
| sell dearly | | | |
| sell down | | | |
| sell down the river | | | |
| seller's market | | | |
| sell ice to Eskimos | | | |
| selling point | | | |
| sell like hot cakes | | | |
| sell one's birthright for a mess of pottage | | | |
| sell one's body | | | |
| sell one's life dearly | | | |
| sell one's own grandmother | | | |
| sell one's soul | | | |
| sellout | | | |
| sell someone a bill of goods | | | |
| sell the family silver | | | |
| sell the pass | | | |
| send a message | | | |
| send away | | | |
| send away for | | | |
| send for a toss | | | |
| send shivers down someone's spine | | | |
| send someone packing | | | |
| send someone to the showers | | | |
| send to Coventry | | | |
| send to dorse | | | |
| send to the glue factory | | | |
| send word | | | |
| sense of craft | | | |
| separate the wheat from the chaff | | | |
| serve notice | | | |
| serve someone right | | | |
| serve the turn | | | |
| serve time | | | |
| serve two masters | | | |
| serve up | | | |
| set a spell | | | |
| set back | | | |
| set by the ears | | | |
| set down | | | |
| set eyes on | | | |
| set foot | | | |
| set for life | | | |
| set in motion | | | |
| set in one's ways | | | |
| set in stone | | | |
| set off | | | |
| set of pipes | | | |
| set of wheels | | | |
| set one's cap at | | | |
| set one's hair on fire | | | |
| set one's heart on | | | |