| obchodní centrumshopping mallPhrase | Phrase |
| obchodnicefemale trader; saleswomanNoun | Noun |
| obchodníktraderNoun | Noun |
| objednanýbooked; having an appointmentAdjective | Adjective |
| objednatorderVerb | Verb |
| objednat semake an appointmentVerb | Verb |
| objednat siorder for oneselfVerb | Verb |
| objednávatorderVerb | Verb |
| objednávkaorderNoun | Noun |
| objektobjectNoun | Noun |
| objemvolumeNoun | Noun |
| objetgo around, bypassVerb | Verb |
| objevitdiscoverVerb | Verb |
| objezddetourNoun | Noun |
| objíždětgo around, drive aroundVerb | Verb |
| objížďkadetourNoun | Noun |
| oblačnocloudyAdverb | Adverb |
| oblastareaNoun | Noun |
| oblečeníclothingNoun | Noun |
| obleksuitNoun | Noun |
| oblékánídress-upNoun | Noun |
| oblékat seget dressedVerb | Verb |
| obléknout seget dressedVerb | Verb |
| oblíbenýfavorite; popularAdjective | Adjective |
| obličejfaceNoun | Noun |
| obloženýgarnished; toppedAdjective | Adjective |
| oborfieldNoun | Noun |
| obrazpicture; paintingNoun | Noun |
| obrázekpictureNoun | Noun |
| obrovskýhugeAdjective | Adjective |
| obsaditoccupy; take a placeVerb | Verb |
| obsahovatcontain; includeVerb | Verb |
| obsluhaservice staffNoun | Noun |
| obuvfootwearNoun | Noun |
| obuv bez podpatkuflat shoesWord combination | Word combination |
| obuv s podpatkemheeled shoesWord combination | Word combination |
| obuvníkshoemakerNoun | Noun |
| obvazbandageNoun | Noun |
| obviněnýaccused personNoun | Noun |
| obvodperimeterNoun | Noun |
| obvykleusuallyAdverb | Adverb |
| obvyklýusualAdjective | Adjective |
| obyčejněusually; by ordinary mailAdverb | Adverb |
| obyčejnýordinaryAdjective | Adjective |
| obývacíliving-roomAdjective | Adjective |
| obývací pokojliving roomWord combination | Word combination |
| obývákliving roomNoun | Noun |
| obyvatelinhabitantNoun | Noun |
| obžalovanýdefendantNoun | Noun |
| ocelsteelNoun | Noun |
| očařeye doctorNoun | Noun |
| očekávatexpectVerb | Verb |
| očieyesNoun | Noun |
| očkovacívaccinationAdjective | Adjective |
| očkovací průkazvaccination cardWord combination | Word combination |
| očkovánívaccinationNoun | Noun |
| očníeyeAdjective | Adjective |
| oční lékařeye doctorWord combination | Word combination |
| odfrom, sincePreposition | Preposition |
| odbavenícheck-in; processingNoun | Noun |
| odbavit secheck inVerb | Verb |
| odbočitturn off; turnVerb | Verb |
| odbočkaturn-off; turningNoun | Noun |
| odbočovatbe turning; turn repeatedlyVerb | Verb |
| odbordepartment; office sectionNoun | Noun |
| odborněprofessionally, expertlyAdverb | Adverb |
| odbornýexpert; professional; technicalAdjective | Adjective |
| odborný lékařspecialist doctorWord combination | Word combination |
| oddělenídepartment; wardNoun | Noun |
| oddělení pobytu cizincůForeigners' Residence DepartmentWord combination | Word combination |
| odejítleave; go awayVerb | Verb |
| odesílatelsenderNoun | Noun |
| oděvgarment; clothing itemNoun | Noun |
| odcházetleave; go awayVerb | Verb |
| odjetleave; depart by vehicleVerb | Verb |
| odjezddepartureNoun | Noun |
| odjíždětleave; depart by vehicleVerb | Verb |
| odkazlinkNoun | Noun |
| odkázatbequeath; leave to someoneVerb | Verb |
| odkdysince when, from whenAdverb | Adverb |
| odkládatpostpone; put offVerb | Verb |
| odkudfrom whereAdverb | Adverb |
| odletflight departureNoun | Noun |
| odletětfly away; depart by airVerb | Verb |
| odlišnýdifferentAdjective | Adjective |
| odložit sitake off clothingVerb | Verb |
| odměnareward; remunerationNoun | Noun |
| odmítatrefuseVerb | Verb |
| odmítnoutrefuse; rejectVerb | Verb |
| odněkudfrom somewhereAdverb | Adverb |
| odnéstcarry away; take awayVerb | Verb |
| odnikudfrom nowhere, not from anywhereAdverb | Adverb |
| odpadwasteNoun | Noun |
| odpadkygarbageNoun | Noun |
| odpočinout sirest; relaxVerb | Verb |
| odpočívatrest; relaxVerb | Verb |
| odpolednein the afternoon, afternoonAdverb | Adverb |
| odpoledníafternoonAdjective | Adjective |
| odpověďanswerNoun | Noun |
| odpovědětanswerVerb | Verb |