| Abbreviation |
Meaning |
| s | Yes |
| s | Smiling |
| S/O | Sold out |
| S/U | Shut up |
| S2R | Send to receive |
| S2S | Sorry to say |
| SAHD | Stay-at-home dad |
| SAHM | Stay-at-home mom |
| SAHP | Stay-at-home parent |
| SALAB | Stop acting like a baby |
| SAMAGAL | Stop annoying me and get a life |
| samzd | Still amazed |
| SASE | Self-addressed stamped envelope |
| SAT | Sorry about that |
| SAT | Scholastic Aptitude Test |
| SB | Small blind |
| SB | Smiling back |
| SB | Should be |
| SBT | Sorry 'bout that |
| SBTM | Should be there momentarily |
| sc2 | StarCraft 2 |
| sc2nite | StarCraft 2 tonight? |
| SCNR | Sorry, could not resist |
| SDIHTT | Someday I'll have the time |
| SEAL | Slaying everyone and laughing |
| SERP | Search engine results page |
| SETE | Smiling ear to ear |
| SF | Science Fiction |
| SFB | S*** for brains |
| SFF | So freaking funny |
| SFS | Sorry for spam |
| SFY | Speak for yourself |
| SH | Same here |
| SH | Short handed |
| shat | Shattrath City |
| shatt | Shattrath City |
| SHID | Slaps head in disgust |
| SHMILY | See how much I love you? |
| Shotgun | Front passenger seat |
| sh^ | Shut up |
| SIA | Someone is around |
| sic | Spelling incorrect |
| SIG | Silence is golden |
| SIL | Son-in-law |
| SIL | Sister-in-law |
| SIM | Shoot, it's Monday |
| SINBAD | Single income, no boyfriend, absolutely desperate |
| SIT | Stay in touch |
| SITD | Still in the dark |
| siul8r | See you later |
| sk8 | Skate |
| sk8r | Skater |
| SLAP | Sounds like a plan |
| SLM | Socially limiting maneuver |
| SLY | Still love you |
| SMDH | Shaking my d*** head |
| SMEM | Send me an e-mail |
| SMF | So much fun |
| SMH | Shaking my head |
| SMH | Smash my head |
| SMH | Scratching my head |
| SML | So much love |
| SN | Screen Name |
| SNAFU | Situation normal, all fouled up |
| SNERT | Snot nosed egotistical rude teenager |
| SNMP | So not my problem |
| SO | Significant other |
| SO8 | Sweet |
| SOAB | Son of a b**** |
| SOB | Son of a b**** |
| SOH | Sense of humor |
| SOH | Slight of hand |
| SOHF | Sense of humor failure |
| sok | It's OK |
| SOL | S*** out of luck |
| SOMY | Sick of me yet? |
| SOOI | Stay out of it |
| SOS | Someone over shoulder |
| SOS | Save our souls |
| SOS | Same old stuff |
| SOS | Someone special |
| SOSG | Someone over shoulder gone |
| SOSO | Same old, same old |
| SOTA | State of the art |
| SOTU | State of the Union |
| SOW | Speaking of which |
| soz | Sorry |
| SP | Spell power |
| sp | Spelling |
| spec | Specialization |
| spk | Speak |
| spkr | Speaker |
| SPROS | Stop, parents reading over shoulder |
| SPST | Same place, same time |
| SRO | Standing room only |
| srry | Sorry |
| srsly | Seriously |
| Sry | Sorry |
| SS | Short stacked |
| SSDD | Same stuff, different day |
| ST2M | Stop talking to me |
| STAR | Stop, think, act, review |
| STBY | Sucks to be you |
| STFD | Sit the f*** down |
| STFD | Shut the front door |
| STFU | Shut the f*** up |
| STFW | Search the flippin' Web |
| STHU | Shut the heck up |
| STLSDR | Still too long, still didn't read |
| STMS | Sick to my stomach |
| stpd | Stupid |
| str8 | Straight |
| STTH | Speak to the hand |
| STW | Search the Web |
| SU | Shut up |
| SUAFU | Situation unchanged, all fouled up |
| SUF | Shut your face |
| sum1 | Someone |
| sup | What's up |
| SUSFU | Situation unchanged, still fouled up |
| sux | Sucks |
| sw | Software |
| SWA | So what a** |
| SWAG | Scientific wild a** guess |
| SWAK | Sealed with a kiss |
| SWALK | Sweet, with all love, kisses |
| SWALK | Sealed with a loving kiss |
| SWAS | Said with a smile |
| SWDYWTTA | So what do you want to talk about |
| SWL | Screaming with laughter |
| SWMBO | She who must be obeyed |
| SWTOR | Star Wars: The Old Republic |
| SY | Sincerely yours |
| SYIH | See you in h*** |
| SYL | See you later |
| SYLA | See you later alligator |
| SYS | See you soon |
| sysop | System operator (chat monitor) |
| SYT | See you tomorrow |
| SYY | Shut your yapper |
| S~! | Salute |