| ItalitalItalian man, Italian personSubstantiv | Substantiv |
| ItálieitálieItalySubstantiv | Substantiv |
| ItalkaitalkaItalian woman, Italian personSubstantiv | Substantiv |
| italskyin ItalianAdverb | Adverb |
| italštinaItalianSubstantiv | Substantiv |
| jáIPronomen | Pronomen |
| Já jsemjá jsemI amPhrase | Phrase |
| já nerad/aI'd rather notPhrase | Phrase |
| jablkoappleSubstantiv | Substantiv |
| jahodastrawberrySubstantiv | Substantiv |
| jahodovýstrawberryAdjektiv | Adjektiv |
| jachtayachtSubstantiv | Substantiv |
| jakhowAdverb | Adverb |
| jak častohow oftenWortkombination | Wortkombination |
| jak dalekohow farWortkombination | Wortkombination |
| jak dlouhohow longWortkombination | Wortkombination |
| jak rychlehow quicklyWortkombination | Wortkombination |
| jak se čtehow is it readPhrase | Phrase |
| jak se jmenujewhat is it calledPhrase | Phrase |
| jak se píšehow is it written?Phrase | Phrase |
| jak se řekne českyhow do you say it in Czech?Phrase | Phrase |
| jak se správně vyslovuje slovohow is the word pronounced correctly?Phrase | Phrase |
| jak se ti/vám líbíhow do you like it?Phrase | Phrase |
| jak se vyslovujehow is it pronounced?Phrase | Phrase |
| jak starýhow oldWortkombination | Wortkombination |
| jak ti/vám chutnáhow do you like the taste?Phrase | Phrase |
| jak vysokohow highWortkombination | Wortkombination |
| jak vysokýhow tall; how highWortkombination | Wortkombination |
| jakoas, likeKonjunktion | Konjunktion |
| jakýwhat kind, howPronomen | Pronomen |
| jaký význam má slovowhat does the word mean?Phrase | Phrase |
| jakžtakžso-soAdverb | Adverb |
| JaponecjaponecJapanese man, Japanese personSubstantiv | Substantiv |
| JaponkajaponkaJapanese woman, Japanese personSubstantiv | Substantiv |
| JaponskojaponskoJapanSubstantiv | Substantiv |
| japonskyin JapaneseAdverb | Adverb |
| japonštinaJapaneseSubstantiv | Substantiv |
| jarníspringAdjektiv | Adjektiv |
| jarospringSubstantiv | Substantiv |
| jasněclearly, sureAdverb | Adverb |
| jasnoclearAdverb | Adverb |
| jasnýclear; obviousAdjektiv | Adjektiv |
| játraliverSubstantiv | Substantiv |
| jazyk (část těla)tongueSubstantiv | Substantiv |
| jazyk (řeč)languageSubstantiv | Substantiv |
| jazykovýlanguageAdjektiv | Adjektiv |
| jazykylanguagesSubstantiv | Substantiv |
| jazzjazzSubstantiv | Substantiv |
| jazzklubjazz clubSubstantiv | Substantiv |
| jazzovýjazzAdjektiv | Adjektiv |
| jde toit is going okay; it is manageablePhrase | Phrase |
| jégeeInterjektion | Interjektion |
| je chyba, žeit is a mistake thatPhrase | Phrase |
| je jasné, co říkámis it clear what I am saying?Phrase | Phrase |
| je mi to lítoI am sorry about itPhrase | Phrase |
| je mi x letI am X years oldWortkombination | Wortkombination |
| je možné, žeit is possible thatGrammatikmuster | Grammatikmuster |
| je od tebe/vás hezkéthat is nice of youPhrase | Phrase |
| je od tebe/vás miléthat is kind of youPhrase | Phrase |
| je od vás hezké, žeit is nice of you thatPhrase | Phrase |
| je (po)třebait is necessary; it is neededWortkombination | Wortkombination |
| je škoda, žeit is a pity thatPhrase | Phrase |
| je to dobřeit is good; it is okayPhrase | Phrase |
| je to fajnit is finePhrase | Phrase |
| je to jednoit does not matterPhrase | Phrase |
| je to miléthat is kindPhrase | Phrase |
| je to možnéit is possiblePhrase | Phrase |
| je to nudnéit is boringPhrase | Phrase |
| je to O.K.je to o.k.it is OKPhrase | Phrase |
| je to pravdais it true?; it is truePhrase | Phrase |
| je to takthat is right; that is soPhrase | Phrase |
| je to v pořádkuit is all right; it is okayPhrase | Phrase |
| je třebait is necessary; it is neededWortkombination | Wortkombination |
| je zakázánoit is forbiddenWortkombination | Wortkombination |
| je zavřenoit is closedWortkombination | Wortkombination |
| jedenoneZahl | Zahl |
| jedenáctelevenZahl | Zahl |
| jedinýonly; singleAdjektiv | Adjektiv |
| jednánínegotiationsSubstantiv | Substantiv |
| jednatelmanaging directorSubstantiv | Substantiv |
| jednatelkafemale managing directorSubstantiv | Substantiv |
| jedničkanumber one, grade ASubstantiv | Substantiv |
| jednoduchýsimpleAdjektiv | Adjektiv |
| jednohubkacanape, small biteSubstantiv | Substantiv |
| jednolůžkovýsingle-roomAdjektiv | Adjektiv |
| jednotlivěindividuallyAdverb | Adverb |
| jednouonceZahl | Zahl |
| jedovatýpoisonousAdjektiv | Adjektiv |
| jehohisPronomen | Pronomen |
| jelendeer, stagSubstantiv | Substantiv |
| jemnýdelicate; fine; gentleAdjektiv | Adjektiv |
| jenonlyAdverb | Adverb |
| jenomonlyAdverb | Adverb |
| jeslenursery, crecheSubstantiv | Substantiv |
| jestliif, whetherKonjunktion | Konjunktion |
| ještěeven, still, again, yet, moreAdverb | Adverb |
| ještě jednouonce more; one more timePhrase | Phrase |
| Ještě jednou, prosímještě jednou, prosímone more time, pleasePhrase | Phrase |
| ještě nikdynever before; not ever yetPhrase | Phrase |
| jetgo by vehicle; rideVerb | Verb |