| slíbitto promiseVerb | Verb |
| slibovatto promiseVerb | Verb |
| slonelephantNoun | Noun |
| sloupcolumn, poleNoun | Noun |
| SlovákslovákSlovak manNoun | Noun |
| slovanskýSlavic, SlavonicAdjective | Adjective |
| SlovenkaslovenkaSlovak womanNoun | Noun |
| SlovenskoslovenskoSlovakiaNoun | Noun |
| slovenskyin SlovakAdverb | Adverb |
| slovenštinaSlovak languageNoun | Noun |
| slovesoverbNoun | Noun |
| slovíčkolittle wordNoun | Noun |
| slovníword-relatedAdjective | Adjective |
| slovní bankaword bankPhrase | Phrase |
| slovníkdictionaryNoun | Noun |
| slovowordNoun | Noun |
| složenkapayment slipNoun | Noun |
| složitto composeVerb | Verb |
| sluchhearingNoun | Noun |
| sluchátkoearpiece, handsetNoun | Noun |
| sluncesunNoun | Noun |
| slunečnísolar; sun-relatedAdjective | Adjective |
| slunečnosunnyAdverb | Adverb |
| slušetto suit, to look good onVerb | Verb |
| službaserviceNoun | Noun |
| službyservicesNoun | Noun |
| služební cestabusiness tripPhrase | Phrase |
| slyšetto hearVerb | Verb |
| slyšet oto hear aboutGrammar pattern | Grammar pattern |
| smartphonesmartphoneNoun | Noun |
| smát selaughVerb | Verb |
| smazatto delete, to eraseVerb | Verb |
| smaženýfriedAdjective | Adjective |
| smažený sýrfried cheeseWord combination | Word combination |
| smažitto fryVerb | Verb |
| směnashiftNoun | Noun |
| směnárnaexchange officeNoun | Noun |
| směrdirectionNoun | Noun |
| smětto be allowed to, mayVerb | Verb |
| smetanacreamNoun | Noun |
| smíchatto mixVerb | Verb |
| smlouvacontractNoun | Noun |
| smlouva na dobu neurčitoupermanent contractWord combination | Word combination |
| smlouva na dobu určitoufixed-term contractWord combination | Word combination |
| smrdětto stink, to smell badVerb | Verb |
| smrtdeathNoun | Noun |
| smůlabad luckNoun | Noun |
| smutněsadlyAdverb | Adverb |
| smutnýsadAdjective | Adjective |
| smyslsense, meaningNoun | Noun |
| snadperhaps, hopefullyAdverb | Adverb |
| snadnoeasilyAdverb | Adverb |
| snadnýeasyAdjective | Adjective |
| snachadaughter-in-lawNoun | Noun |
| snášetto tolerate, to bearVerb | Verb |
| sňatekmarriageNoun | Noun |
| snažit setryVerb | Verb |
| sněmovnaChamber of DeputiesNoun | Noun |
| sněženísnowfallNoun | Noun |
| sněžitto snowVerb | Verb |
| snídaněbreakfastNoun | Noun |
| snídathave breakfastVerb | Verb |
| sníhsnowNoun | Noun |
| snístto eat up, to finish eatingVerb | Verb |
| snítto dreamVerb | Verb |
| sníženýreducedAdjective | Adjective |
| sobeckýselfishAdjective | Adjective |
| sobotaSaturdayNoun | Noun |
| socialismussocialismNoun | Noun |
| socialistickýsocialistAdjective | Adjective |
| sociálnísocialAdjective | Adjective |
| sociální pojištěnísocial insuranceWord combination | Word combination |
| softwaresoftwareNoun | Noun |
| sochastatueNoun | Noun |
| sochařsculptorNoun | Noun |
| sochařkafemale sculptorNoun | Noun |
| solárnísolarAdjective | Adjective |
| solární panelsolar panelWord combination | Word combination |
| souborfileNoun | Noun |
| současnostpresent timeNoun | Noun |
| současnýpresent; currentAdjective | Adjective |
| součástpartNoun | Noun |
| součetsumNoun | Noun |
| soudcourtNoun | Noun |
| soudcejudgeNoun | Noun |
| soudkyněfemale judgeNoun | Noun |
| soudníjudicial; court-relatedAdjective | Adjective |
| soudní tlumočnicefemale court interpreterWord combination | Word combination |
| soudní tlumočníkcourt interpreterWord combination | Word combination |
| souhlasitto agreeVerb | Verb |
| souhlasit sto agree withGrammar pattern | Grammar pattern |
| soukromíprivacyNoun | Noun |
| soukromýprivateAdjective | Adjective |
| sourozenecsiblingNoun | Noun |
| sousedneighborNoun | Noun |
| souseditto neighbor, to borderVerb | Verb |
| sousedkafemale neighborNoun | Noun |
| sousedníneighboringAdjective | Adjective |
| soustrastcondolencesNoun | Noun |
| soustředit sefocusVerb | Verb |