| -x {suffix} | :: A gender-neutral, not pronounced suffix that replaces -o and -a in nouns, adjectives and pronouns. Commonly used to attain a politically correct goal |
| x {letter} /ˈʃiʃ/ | :: letter |
| X {letter} /ˈʃiʃ/ | :: letter |
| X9 {mf} /ʃisˈnɔvi/ | :: snitch, informer, grass |
| xá {m} /ˈʃa/ | :: shah (title of Persian kings) |
| x-acto {f} | :: superseded spelling of x-ato |
| xador {m} | :: chador (a loose robe worn by Muslim women) |
| xadrez {m} /ʃɐ.ˈðɾeʃ/ | :: chess |
| xadrez {m} | :: checkered pattern |
| xadrez {adj} | :: checkered |
| xadrezista {mf} | :: chess player (person who plays chess) |
| xágara {f} | :: alternative form of jágara |
| xaile {m} /ˈʃaj.lɨ/ | :: shawl; headscarf (cloth worn over the shoulders or head) |
| xairel {m} | :: saddlecloth (blanket placed under a saddle) |
| xale {m} | :: alternative form of xaile |
| xamã {mf} /ʃɐ.ˈmɐ̃/ | :: shaman (a medium between the concrete and spirit worlds) |
| xamanismo {m} | :: shamanism (any of several traditional beliefs involving altered states of consciousness) |
| xampu {m} /ʃɐ̃ˈpu/ | :: shampoo |
| xana {f} /ˈʃɐ.na/ | :: pussy (female genitalia) |
| Xangai {prop} {f} /ʃɐ̃.ˈɡaj/ | :: Xangai (direct-administered municipality/major port city) |
| Xangô {prop} {m} | :: Shango (orisha in Yoruba religion) |
| Xangri-lá {prop} | :: Xangri-lá (municipality) |
| xantina {f} | :: xanthine (any group of alkaloids, including caffeine) |
| Xanxerê {prop} | :: Xanxerê (municipality) |
| xará {mf} | :: namesake (person with the same name as another) |
| xará {mf} | :: bro; pal; mate (informal term of address) |
| xareta {f} | :: a type of fishing net |
| xaréu {m} | :: pompano (any of various fishes of the genus Trachinotus) |
| xaréu {m} | :: jack (any of various fishes of the genus Caranx) |
| xaria {f} | :: shari'a (Islamic religious law) |
| xarife {m} | :: shereef (a member of an Arab princely family) |
| xaroco {m} | :: alternative form of siroco |
| xarope {m} | :: syrup |
| xastre {m} /ˈʃaɕt̪ɾɯ/ | :: tailor (person who makes, repairs or alters clothing) |
| x-ato {f} | :: utility knife |
| xauarma {f} | :: shawarma (Middle Eastern sandwich-like wrap) |
| xauim {m} | :: alternative form of sagui |
| xavante {mf} | :: a member of the Xavánte people |
| xavante {m} | :: Xavánte (Ge language spoken by the Xavánte people) |
| xavante {adj} | :: relating to the Xavánte peple |
| Xavantina {prop} | :: Xavantina (municipality) |
| xavasca {f} /ʃa.ˈvas.ka/ | :: pussy (female genitalia) |
| xavecar {v} /ʃa.ve.ˈka(ɾ)/ | :: to flirt with, to try to seduce someone by flattening |
| xavecar {v} | :: to cheat, to act in an unfair way |
| xaveco {m} /ʃa.ˈvɛ.ku/ | :: xebec (Arabic transport ship) |
| xaveco {m} | :: a small, old and poorly built boat that is likely to sink |
| xaveco {m} | :: flirting (talk in which one intends to seduce a person) |
| xaveco {m} | :: knavery, trickery |
| xaveco {m} | :: trifle (something or someone without much importance) |
| xaveco {m} | :: hag (old and ugly woman) |
| Xavier {prop} {m} /ʃɐˈvjɛɾ/ | :: given name |
| Xaxim {prop} | :: Xaxim (municipality) |
| X burguer {m} | :: cheeseburger (hamburger with cheese) |
| xeca {f} | :: female genitals; vagina |
| xeique {m} | :: a sheik |
| xelim {m} /ʃɨ.ˈlĩ/ | :: shilling (former coin, currency) |
| Xenófanes {prop} {m} | :: Xenophanes (ancient Greek philosopher and a poet) |
| xenofobia {f} | :: xenophobia (fear or hatred of foreigners) |
| xenofóbico {adj} | :: xenophobic (exhibiting or characteristic of xenophobia) |
| xenofobismo {m} | :: synonym of xenofobia |
| xenófobo {adj} | :: xenophobic (exhibiting or characteristic of xenophobia) |
| xenófobo {m} | :: xenophobe (person who hates foreigners) |
| xenólito {m} | :: xenolith |
| xénon {m} | :: xenon |
| xênon {m} | :: alternative form of xénon |
| xenónio {m} | :: xenon (a noble gas with an atomic number of 54) |
| xenônio {m} | :: alternative form of xenónio |
| xenótimo {m} | :: xenotime |
| xenotransplante {m} | :: xenotransplantation (transplantation into a different species) |
| xeque {m} /ˈʃɛ.kɨ/ | :: check, in the meaning of a position in which an opposing piece is attacking a king |
| xeque {m} | :: a sheik |
| xeque-mate {m} /ˌʃɛ.ki.ˈma.t͡ʃi/ | :: checkmate (conclusive victory in a game of chess) |
| xeque-mate {m} | :: checkmate (situation with no obvious escape) |
| xeque-mate {interj} | :: checkmate (said when making the conclusive move in chess) |
| xequeré {m} | :: alternative form of xequerê |
| xequerê {m} | :: sekere (musical instrument similar to a rattle) |
| Xerazade {prop} {f} | :: given name |
| xereca {f} /ʃe.ˈɾɛ.ka/ | :: the vulva |
| xereta {mf} | :: nosey person |
| xeretar {v} | :: to pry (to look where one is not welcome; to be nosey) |
| xerez {m} | :: sherry (type of fortified wine) |
| xerife {m} | :: sheriff |
| xerocar {v} /ʃe.ɾoˈka(ʁ)/ | :: to photocopy; to xerox (to make photocopies) |
| xerófilo {adj} /ʃe.ˈɾɔ.fi.lu / | :: xerophilic |
| xeroftalmia {f} | :: xerophthalmia (condition where the conjunctiva and cornea become dry) |
| xerografia {f} | :: xerography |
| xerox {m} /ˈʃe.ɾɔk(i)s/ | :: photocopy; xerox (copy of a document made using a photocopier) |
| xerox {m} | :: photocopier; copier (machine which makes copies of paper documents) |
| xerox {m} | :: a shop where photocopying and related services are offered |
| xérox {m} | :: alternative form of xerox |
| Xerxes {prop} {m} | :: Xerxes (name of various Persian emperors) |
| x-ésimo {adj} | :: whatth (on a variable or unknown ordinal position) |
| xevá {m} | :: alternative form of schwa |
| xhosa {m} | :: Xhosa (member of a Bantu people from South Africa) |
| xhosa {m} | :: Xhosa (a Bantu language spoken by the Xhosa) |
| xi {interj} | :: indicates that something has failed |
| xi {interj} | :: indicates that someone is in trouble |
| xi {m} | :: alternative spelling of csi |
| Xiamen {prop} {f} | :: Xiamen (prefecture-level city/and/sub-provincial city) |
| Xibalba {prop} {f} | :: Xibalba (the underworld in Mayan mythology) |
| xibio {m} | :: alternative form of xibiu |
| xibiu {m} | :: pussy (the female genitalia) |
| xícara {f} /ˈʃi.kɐ.ɾɐ/ | :: a cup or mug (vessel with a handle for hot beverages) |
| xícara {f} | :: cupful (the amount of liquid that fits a cup) |
| xii {interj} | :: alternative form of xi |
| xiii {interj} | :: alternative form of xi |
| xiismo {m} /ʃi.ˈiz.mu/ | :: Shi'a; Shi'ism; Shia Islam (a branch of Islam) |
| xiita {adj} /ʃi.ˈi.ta/ | :: Shiite (of, or relating to Shiites or the Shi'a branch of Islam) |
| xiita {adj} | :: extremist (taking an extreme view on something) |
| xiita {mf} | :: Shiite (a member of the Shi'a branch of Islam) |
| xiita {mf} | :: extremist (someone who has an extreme view on something) |
| xilema {m} | :: xylem (vascular tissue in land plants) |
| xileno {m} | :: xylene (di-methyl-benzene) |
| xilindró {m} /ˌʃi.lĩ.ˈdɾɔ/ | :: gaol (place for the confinement of people) |
| xilitol {m} | :: xylitol (a pentahydric alcohol derived from xylose) |
| xilo- {prefix} /ˌʃi.lo/ | :: xylo- (relating to wood) |
| xilofone {m} | :: xylophone (instrument consisting of wooden bars struck by mallets) |
| xilografia {f} | :: xylography (art of making engravings in wood) |
| xilografia {f} | :: xylograph (engraving in wood) |
| xilose {f} | :: xylose (a sugar derived from wood) |
| xingamento {m} /ˌʃĩɡɐˈmẽtu/ | :: insult (speech intended to be rude) |
| xingar {vt} /ʃĩˈɡa(ɾ)/ | :: to insult; to swear at |
| xingar {vi} | :: to curse (to use vulgar words to expressing anger, frustration) |
| Xingu {prop} {m} | :: Xingu (river) |
| Xinjiang {prop} {m} | :: alternative form of Sinkiang |
| xintoísmo {m} | :: Shinto (an animistic religion originating in Japan) |
| xintoísta {adj} | :: Shinto (pertaining or related to Shintoism) |
| Xique-Xique {prop} | :: Xique-Xique (municipality) |
| Xiraz {prop} {f} | :: Xiraz (city) |
| xiri {m} | :: pussy (the female genitalia) |
| xis {m} /ˈʃiʃ/ | :: ex (name of the Latin letter X, x) |
| xis {interj} | :: cheese (said while being photographed) |
| xis {m} | :: burger (large sandwich with a patty) |
| xis {m} | :: main (the main part of something) |
| xisto {m} | :: schist; shale (a sedimentary rock) |
| xituculumucumba {m} /ʃi.tu.ku.lu.muˈkũ.bɐ/ | :: A kind of evil spirit or bogeyman that appears in nightmares |
| xiu {interj} | :: Requesting silence; shh |
| Xiva {prop} {m} | :: alternative spelling of Shiva |
| xixa {m} | :: hookah; narghile (Oriental tobacco pipe wherein the smoke is drawn through water) |
| xixi {m} /ʃiˈʃi/ | :: pee (urine) |
| xô {interj} | :: shoo (order to keep out) |
| xô {contraction} | :: contraction of deixa eu; lemme |
| xogum {m} | :: shogun (military governor of Japan) |
| xogunato {m} | :: shogunate (administration of a shogun) |
| xonar {v} | :: clipping of apaixonar |
| xor {m} | :: xor; exclusive or (logical operation that outputs true only when both inputs differ) |
| XOR {m} | :: alternative spelling of xor |
| Xororó {prop} | :: given name |
| xota {f} | :: female genitals; vagina |
| xote {m} /ˈʃɔ.t͡ʃi/ | :: a Brazilian dance and music subgenre associated with forró |
| xote {m} | :: a dance and music genre of South Brazil |
| xote {m} | :: schottische; schottisch (a lively dance similar to polka) |
| xou {m} | :: rare spelling of show |
| xou {adj} | :: rare spelling of show |
| xoxota {f} /ʃoˈʃɔ.tɐ/ | :: pussy (female genitalia) |
| xpto {adj} /ʃiʃpeteˈɔ/ | :: cutting-edge (representing the forefront, or position of greatest advancement) |
| xuá {interj} | :: the sound of rushing water |
| xuá {m} | :: alternative form of schwa |
| xucro {adj} | :: untamed |
| xucro {adj} | :: inexperienced |
| xucro {adj} | :: rude or uncouth |
| xucro {adj} | :: without sugar; sugarless |
| xurumbambo {m} /ʃu.ɾũ.ˈbɐ̃.bu/ | :: old and worn-out object |
| xuxu {m} | :: nonstandard spelling of chuchu |
| xúxu {m} | :: nonstandard spelling of chuchu |
| xylema {m} | :: obsolete spelling of xilema |
| xylo- {prefix} | :: obsolete spelling of xilo- |