ยุทธการ | yooH thohtH gaanM | noun, phrase, formal, loanword, Pali | battle |
| ยุทธจักร | yooH thohtH jak[r]L | noun | arena; battle circle; war theater |
| ยุทธจักร | yooH thohtH jak[r]L | noun, figurative | [figurative usage] inner circle; fraternity |
ยุทธภัณฑ์ | yooH thohtH phan[t]M | noun, phrase, formal, loanword, Pali | military supplies; war materiel |
| ยุทธภูมิ | yooH thohtH phuuM miH | noun, phrase, formal, loanword, Pali | battlefield |
| ยุทธวิธี | yooH thohtH wiH theeM | noun, phrase, formal, loanword, Pali | military tactics |
| ยุทธวิธี | yooH thohtH wiH theeM | noun | artifice; tactics; means; stratagem; trick; strategy; trickery |
| ยุทธศาสตร์ | yooH thohtH saat[dr]L | noun, formal, loanword, Pali | a (military, economic, etc.) strategy |
| ยุทธศาสตร์แบบมีชัยชนะร่วมกัน | yooH thohtH saat[dr]L baaepL meeM chaiM chaH naH ruaamF ganM | noun, phrase, formal | a win-win strategy |
| ยุทธหัตถี | yooH thohtH hatL theeR | noun, phrase, formal, loanword, Pali | a war elephant; combat while mounted on war elephants |
| ยุทโธปกรณ์ | yootH thohM bpaL goh[r]nM | noun | war materiel |
| ยุ่น | yoonF | adjective | [abbreviation of ยุ่นปี่] Japanese |
| ยุ่นปี่ | yoonF bpeeL | adjective | Japanese |
| ยุบ | yoopH | verb, intransitive | to sink; to cave in; to collapse; to give in |
| verb, transitive | to disband or dissolve a group |
| verb, transitive | to abolish; cancel; annul; abrogate |
| verb, transitive | to melt |
| verb, intransitive | to go down; subside; vanish |
| ยุบตัว | yoopH dtuaaM | verb | subside; cave in; sink |
| ยุบยับ | yoopH yapH | adverb | (to be vanquished) disastrously; (to be defeated) throroughly |
| ยุ่บยั่บ | yoopF yapF | adjective | teeming; creepy-crawly with; swarming |
| verb, intransitive | to teem with; to swarm with |
| ยุบลง | yoopH lohngM | verb | to fall down (in) |
| ยุบสภา | yoopH saL phaaM | verb | to dissolve the parliament; abolish the congress; disband the assembly |
| ยุพราช | yoopH raatF | noun, phrase, formal, loanword, Pali | the Crown Prince |
| ยุ่มย่าม | yoomF yaamF | verb | to prowl; to roam; to trespass; to meddle |
| adjective | profuse; teeming with; swarming with |
| ยุ่ย | yuyF | verb | to soften by boiling or heating |
| verb | to crumble; to disintegrate; to break up |
| ยุ้ย | yuyH | attributive verb | [is] chubby; protruding |
| ยุยง | yooH yohngM | verb, transitive, intransitive, formal | to incite; to provoke |
| ยุยงส่งเสริม | yooH yohngM sohngL seermR | verb, transitive, intransitive, phrase, formal | to incite |
| ยุแยง | yooH yaaengM | | to instigate, abet, arouse |
| ยุแยงตะแคงรั่ว | yooH yaaengM dtaL khaaengM ruaaF | verb | to instigate, abet, arouse |
ยุริ  | yooH riH | noun, loanword, Japanese | [Thai transcription of the foreign loanword, "百合" or "yuri"] lesbian-themed Japanese-style comics |
| ยุเรเนียม | yooH raehM niiamM | noun | [chemistry] Uranium, U, atomic number 92 |
 ยุโรป | yooH rohpF | noun | [Thai transcription of the foreign loanword, "Europe"] |
| adjective, loanword, English | European |
| ยุว | yooH waH | prefix | [a prefix meaning: pertaining to] youth; juvenile |
| ยุวกสิกร | yooH waH gaL siL gaawnM | noun, phrase, formal, loanword, Pali | organization of youth agriculturalists |
| ยุวชน | yooH waH chohnM | noun, phrase, formal, loanword, Pali | youth; young people |
| ยุวพุทธ | yooH waH phootH | noun, phrase, formal, loanword, Pali | Association of Young Buddhists |
| ยุแหย่ | yooH yaaeL | verb | to create dissension; to cause friction |
| ยู | yuuM | | [Thai pronunciation of the English letter,] 'U' |
| ยู่ | yuuF | adjective | crumpled; rumpled; battered; bashed in |
| ยูคาลิปตัส | yuuM khaaM lipH dtatL | noun, loanword, English | eucalyptus |
| ยูเครน | yuuM khraehnM | proper noun, geographical | [ประเทศยูเครน] Ukraine, a country in Europe |
| ยูง | yuungM | noun | [ต้นยูง] Garjan tree, Dipterocarpus turbinatus |
| noun | [นกยูง] peacock |
| ยูงกระสันเมฆ | yuungM graL sanR maehkF | phrase | [old Thai adage meaning] to lust after something you are not worthy of |
| ยูซิส | yuuM sitH | proper noun, loanword, English | USIS |
| ยูเซอร์ | yuuM suuhrM | noun, loanword, English | [Thai transcription of the foreign loanword, "user"] |
| ยูเซอร์เนม | yuuM suuhrM naehmM | noun, phrase, colloquial, loanword, English | [Thai transcription of the foreign loanword, "username"] |
| ยูโด | yuuM dohM | noun, loanword, Japanese | [Thai transcription of the foreign loanword, "judo"] |
| ยูทาห์ | yuuM thaa[h]M | proper noun, geographical, loanword, English | Utah [state of the United States] |
| ยูนิกซ์ | yuuM nik[s]H | noun, proper noun, loanword, English | [Thai transcription of the foreign loanword, "Unix"] |
| ยูนิลิเวอร์ | yuuM niH liH wuuhrM | proper noun | Unilever |
| ยูเนสโก | yuuM naehtF gohM | proper noun, loanword, English | UNESCO |
| ยูเนี่ยน | yuuM niianF | noun, loanword, English | [Thai transcription of the foreign loanword, "union"] |
