| tradicetraditionNoun | Noun |
| tradičnětraditionallyAdverb | Adverb |
| tradičnítraditionalAdjective | Adjective |
| trafikatobacco shopNoun | Noun |
| tragickýtragicAdjective | Adjective |
| tramvajtramNoun | Noun |
| trapasembarrassing situationNoun | Noun |
| trápittrouble; botherVerb | Verb |
| trasarouteNoun | Noun |
| traťline or trackNoun | Noun |
| trávagrassNoun | Noun |
| trávitspendVerb | Verb |
| trenércoachNoun | Noun |
| trenérkafemale coachNoun | Noun |
| trénovattrainVerb | Verb |
| trestpunishmentNoun | Noun |
| trestnícriminalAdjective | Adjective |
| trhmarketNoun | Noun |
| trhatpull out; tearVerb | Verb |
| tričkot-shirtNoun | Noun |
| trikoT-shirtNoun | Noun |
| trochua little, a bitAdverb | Adverb |
| trojčatatripletsNoun | Noun |
| trojčetripletNoun | Noun |
| trojicegroup of threeNoun | Noun |
| trojskýTrojanAdjective | Adjective |
| trolejbustrolleybusNoun | Noun |
| trombóntromboneNoun | Noun |
| tropickýtropicalAdjective | Adjective |
| troubaovenNoun | Noun |
| trpělivostpatienceNoun | Noun |
| trpělivýpatientAdjective | Adjective |
| trubkatubeNoun | Noun |
| truhlářcarpenterNoun | Noun |
| trumpetatrumpetNoun | Noun |
| trvalýpermanentAdjective | Adjective |
| trvattake; lastVerb | Verb |
| tržnicemarket hallNoun | Noun |
| třebafor instanceParticle | Particle |
| třešeňcherryNoun | Noun |
| třetíthirdNumber | Number |
| třithreeNumber | Number |
| třicátýthirtiethNumber | Number |
| třicetthirtyNumber | Number |
| třicetiletýthirty years oldAdjective | Adjective |
| třikrátthree timesAdverb | Adverb |
| třináctthirteenNumber | Number |
| tuhereAdverb | Adverb |
| tučnýfatty, greasy; boldAdjective | Adjective |
| tudythis way; through hereAdverb | Adverb |
| tukfat or greaseNoun | Noun |
| turistatouristNoun | Noun |
| turistickýtouristAdjective | Adjective |
| tužkapencilNoun | Noun |
| tvarshapeNoun | Noun |
| tvarohcottage cheeseNoun | Noun |
| tvářfaceNoun | Noun |
| tvorbacreative workNoun | Noun |
| tvořitform; createVerb | Verb |
| tvrditclaimVerb | Verb |
| tvrdohlavýstubbornAdjective | Adjective |
| tvrdýhardAdjective | Adjective |
| tvůjyourPronoun | Pronoun |
| tweettweetNoun | Noun |
| tweetovatto tweetVerb | Verb |
| tyyouPronoun | Pronoun |
| týdenweekNoun | Noun |
| týdenníweeklyAdjective | Adjective |
| týdněweeklyAdverb | Adverb |
| tygrtigerNoun | Noun |
| tykatuse informal addressVerb | Verb |
| týmteamNoun | Noun |
| typtypeNoun | Noun |
| typickytypicallyAdverb | Adverb |
| typickýtypicalAdjective | Adjective |
| uat, near, next toPreposition | Preposition |
| ubytovacíaccommodationAdjective | Adjective |
| ubytováníaccommodationNoun | Noun |
| ubytovnahostel or dormitoryNoun | Noun |
| účastparticipationNoun | Noun |
| účastníkparticipantNoun | Noun |
| účastnit separticipateVerb | Verb |
| učebnaclassroomNoun | Noun |
| učebnicetextbookNoun | Noun |
| učenílearningNoun | Noun |
| účeshairstyleNoun | Noun |
| učesat secomb one's hairVerb | Verb |
| účetbill, receipt, or accountNoun | Noun |
| účetníaccountantNoun | Noun |
| účetnictvíaccountingNoun | Noun |
| učilištěvocational schoolNoun | Noun |
| učitteachVerb | Verb |
| učit selearn; studyVerb | Verb |
| učitelteacherNoun | Noun |
| učitelkafemale teacherNoun | Noun |
| účtenkareceiptNoun | Noun |
| účtovatcharge; keep accountsVerb | Verb |
| údajněallegedly, reportedlyAdverb | Adverb |
| událosteventNoun | Noun |
| udělatdo; makeVerb | Verb |