| stick to one's text | | | |
| stick to someone's ribs | | | |
| sticky-finger | | | |
| sticky fingers | | | |
| stiff-upper-lippery | | | |
| stink a buzzard off a gut wagon | | | |
| stink eye | | | |
| stink on ice | | | |
| stir someone's blood | | | |
| stir the embers | | | |
| stone cold | | | |
| stone dead | | | |
| stonewall | | | |
| stop a bullet | | | |
| stop cold | | | |
| stop dead | | | |
| stop the bleeding | | | |
| stop the lights | | | |
| storm off | | | |
| storm out of the blocks | | | |
| story | | | |
| storybook | | | |
| stovepipe hat | | | |
| straight and narrow | | | |
| straighten up | | | |
| straighten up and fly right | | | |
| straight from the horse's mouth | | | |
| straight from the shoulder | | | |
| straight out of the chute | | | |
| straight shooter | | | |
| strain at a gnat | | | |
| strain at the leash | | | |
| strange bird | | | |
| strangle the parrot | | | |
| straw-clutchingly | | | |
| straw poll | | | |
| streets ahead | | | |
| streets behind | | | |
| strike a blow | | | |
| strike a chord | | | |
| strike it lucky | | | |
| strike it rich | | | |
| strike someone when they are down | | | |
| strike tallies | | | |
| strike while the iron is hot | | | |
| string along | | | |
| string to one's bow | | | |
| string up | | | |
| stroke of luck | | | |
| stroke of work | | | |
| strut one's stuff | | | |
| stub out | | | |
| stuck on | | | |
| stuck up | | | |
| stuffed like a turkey | | | |
| stuffed shirt | | | |
| stuff one's face | | | |
| stuff the ballot box | | | |
| stumbling-block | | | |
| stump it | | | |
| suck a lemon | | | |
| suck and blow | | | |
| suck dry | | | |
| suck face | | | |
| suck it | | | |
| suck it up | | | |
| suck my dick | | | |
| suck on that | | | |
| suck tits | | | |
| suffer fools gladly | | | |
| sugar and spice and everything nice | | | |
| sugarcoat a bitter pill | | | |
| sugarcoat the pill | | | |
| sugar-plum | | | |
| suit the action to the word | | | |
| summer and winter | | | |
| Sunday-go-to-meeting clothes | | | |
| sunshine and rainbows | | | |
| supposed to | | | |
| sure enough | | | |
| suspend one's disbelief | | | |
| swaddling clothes | | | |
| swallow one's pride | | | |
| swallow the leek | | | |
| swap horses in midstream | | | |
| swear off | | | |
| sweat bullets | | | |
| sweat of one's brow | | | |
| sweep aside | | | |
| sweep out | | | |
| sweep something under the rug | | | |
| sweep the deck | | | |
| sweeten the pill | | | |
| sweeten up | | | |
| sweetheart deal | | | |
| sweet Jesus | | | |
| sweet Mary mother of God | | | |
| sweetness and light | | | |
| sweet smell of success | | | |
| sweet-talk | | | |