| blondblondAdjective | Adjective |
| blonďatýblondAdjective | Adjective |
| blůzablouseNoun | Noun |
| blýskat seflash with lightningVerb | Verb |
| bodpointNoun | Noun |
| bohatýrichAdjective | Adjective |
| bohoslužbachurch serviceNoun | Noun |
| bohuželunfortunatelyParticle | Particle |
| bohužel, nemůžuunfortunately, I can'tPhrase | Phrase |
| bojfightNoun | Noun |
| bojlerwater heaterNoun | Noun |
| bojovatfight; struggleVerb | Verb |
| bojovýfightingAdjective | Adjective |
| bolestpainNoun | Noun |
| bolethurt; acheVerb | Verb |
| bonvoucherNoun | Noun |
| bonboncandyNoun | Noun |
| botashoe; bootNoun | Noun |
| bouřkastormNoun | Noun |
| bowlingbowlingNoun | Noun |
| božígod's (Christmas Day)Adjective | Adjective |
| bramborpotatoNoun | Noun |
| bramborapotatoNoun | Noun |
| bramborová kašemashed potatoesWord combination | Word combination |
| bramborovýpotatoAdjective | Adjective |
| bráttakeVerb | Verb |
| brát sitake for oneself; marryPhrase | Phrase |
| bratrbrotherNoun | Noun |
| bratranecmale cousinNoun | Noun |
| brigádapart-time jobNoun | Noun |
| brigádnicefemale temporary workerNoun | Noun |
| brigádníkmale temporary workerNoun | Noun |
| BritbritBritish man; BritNoun | Noun |
| BritániebritánieBritainNoun | Noun |
| britskýBritishAdjective | Adjective |
| bronchitidabronchitisNoun | Noun |
| broskevpeachNoun | Noun |
| broučeklittle beetle; sweetheartNoun | Noun |
| brusinkacranberryNoun | Noun |
| brusleskate; skatesNoun | Noun |
| bruslitskateVerb | Verb |
| brýleglassesNoun | Noun |
| brzosoonAdverb | Adverb |
| brzo se uzdravteget well soonPhrase | Phrase |
| brzyearly, soonAdverb | Adverb |
| březenMarchNoun | Noun |
| březnovýMarch (adjectival)Adjective | Adjective |
| břichobelly; stomachNoun | Noun |
| búmooInterjection | Interjection |
| buď tak hodnýbe so kindPhrase | Phrase |
| buddhistaBuddhist manNoun | Noun |
| buddhistkaBuddhist womanNoun | Noun |
| bude mi x letI will be x years oldPhrase | Phrase |
| budíkalarm clockNoun | Noun |
| budit sewake upVerb | Verb |
| budoucnostfutureNoun | Noun |
| budovabuildingNoun | Noun |
| buďte tak hodnýbe so kindPhrase | Phrase |
| buďte tak hodný abe so kind andPhrase | Phrase |
| budvarBudvar beerNoun | Noun |
| bufetbuffetNoun | Noun |
| BulharbulharBulgarian manNoun | Noun |
| BulharkabulharkaBulgarian womanNoun | Noun |
| BulharskobulharskoBulgariaNoun | Noun |
| bulharskyin BulgarianAdverb | Adverb |
| bulharštinaBulgarian languageNoun | Noun |
| bulvárnítabloidAdjective | Adjective |
| bundajacketNoun | Noun |
| bydleníhousing; livingNoun | Noun |
| bydletlive; resideVerb | Verb |
| bydlet uto live with; live at someone's placeGrammar pattern | Grammar pattern |
| bydlištěplace of residenceNoun | Noun |
| bytapartment; flatNoun | Noun |
| býtbeVerb | Verb |
| byt 3+1three-room flat with kitchenPhrase | Phrase |
| být hodný, žebe kind of someone toPhrase | Phrase |
| být lítoto be sorry; regretPhrase | Phrase |
| být nudnéto be boringPhrase | Phrase |
| být rád/a/rádito be glad; to likeWord combination | Word combination |
| být rád/a/rádi, žeto be glad thatPhrase | Phrase |
| být … roků/letto be ... years oldPhrase | Phrase |
| být šťastný, žeto be happy thatPhrase | Phrase |
| být v provozuto be in operationWord combination | Word combination |
| být zto be fromGrammar pattern | Grammar pattern |
| být zajímavéto be interestingPhrase | Phrase |
| bývalýformer; exAdjective | Adjective |
| cédéčkoCDNoun | Noun |
| celacell; prison cellNoun | Noun |
| celebritacelebrityNoun | Noun |
| celerceleryNoun | Noun |
| celkemin totalAdverb | Adverb |
| celkověoverallAdverb | Adverb |
| celkovýtotal; overallAdjective | Adjective |
| celnícustomsAdjective | Adjective |
| celnicecustoms officeNoun | Noun |
| celýwhole; entireAdjective | Adjective |
| celý úvazekfull-time jobWord combination | Word combination |
| cenapriceNoun | Noun |
| cenově výhodnýaffordablePhrase | Phrase |
| centimetrcentimeterNoun | Noun |