| bolethurt; acheVerb | Verb |
| bonvoucherNoun | Noun |
| bonboncandyNoun | Noun |
| botashoe; bootNoun | Noun |
| bouřkastormNoun | Noun |
| bowlingbowlingNoun | Noun |
| božígod's (Christmas Day)Adjective | Adjective |
| bramborpotatoNoun | Noun |
| bramborapotatoNoun | Noun |
| bramborovýpotatoAdjective | Adjective |
| bráttakeVerb | Verb |
| 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 |
| brzyearly, soonAdverb | Adverb |
| březenMarchNoun | Noun |
| březnovýMarch (adjectival)Adjective | Adjective |
| břichobelly; stomachNoun | Noun |
| búmooInterjection | Interjection |
| buddhistaBuddhist manNoun | Noun |
| buddhistkaBuddhist womanNoun | Noun |
| budíkalarm clockNoun | Noun |
| budit sewake upVerb | Verb |
| budoucnostfutureNoun | Noun |
| budovabuildingNoun | Noun |
| 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 |
| bydlištěplace of residenceNoun | Noun |
| bytapartment; flatNoun | Noun |
| býtbeVerb | Verb |
| 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 |
| cenapriceNoun | Noun |
| centimetrcentimeterNoun | Noun |
| centrumcenter; centreNoun | Noun |
| certifikátcertificateNoun | Noun |
| certifikovanýcertifiedAdjective | Adjective |
| cestajourney; trip; wayNoun | Noun |
| cestovánítravelNoun | Noun |
| cestovattravelVerb | Verb |
| cestovateltravelerNoun | Noun |
| cestovatelkafemale travelerNoun | Noun |
| cestovatelskýtravel; traveller-relatedAdjective | Adjective |
| cestovnítravelAdjective | Adjective |
| cestujícítraveler; passengerNoun | Noun |
| cibuleonionNoun | Noun |
| cibulovýonionAdjective | Adjective |
| cigaretacigaretteNoun | Noun |
| cílgoal; targetNoun | Noun |
| cimbálcimbalom; dulcimerNoun | Noun |
| cimrmanologieCimrmanologyNoun | Noun |
| církevchurchNoun | Noun |
| církevníchurch; ecclesiasticalAdjective | Adjective |
| cirkuscircusNoun | Noun |
| císařemperorNoun | Noun |
| citátquoteNoun | Noun |
| cítitfeelVerb | Verb |
| citlivěsensitivelyAdverb | Adverb |
| citlivýsensitiveAdjective | Adjective |
| citronlemonNoun | Noun |
| civilizacecivilizationNoun | Noun |
| cizíforeign; strangeAdjective | Adjective |
| cizinecforeigner; strangerNoun | Noun |
| cizineckýimmigration; foreigner-relatedAdjective | Adjective |
| cizinkaforeign womanNoun | Noun |
| cowhatPronoun | Pronoun |
| ctižádostivýambitiousAdjective | Adjective |
| cukrsugarNoun | Noun |
| cukrárnacake shop; pastry shopNoun | Noun |