Vesre

NOTE: When the syllables of the noun are switched, the original gender - masculine or feminine - is kept; e.g., "un café -> un feca"

• revés → vesre (reverse; backwards). "verre" is much more commonly used in Argentina, as in: "Nosotros hablamos al vesre, ¿viste? ("We speak wardbacks, see?")
• café → feca (coffee) e.g., "¿Querés un feca?" (Would you like some coffee?")
• caballo → llobaca (horse)
• botella → llatebo (bottle)
• pelo → lope (hair)
• leche → chele (milk, also used to refer to semen)
• libro → broli (book) e.g., (usually plural) "¡Che, agarrá los brolis más seguido!" (Dude, get the books and learn something!)
• amigo → gomía (friend) e.g., "¡Eh!, ¡¿qué hacés gomía?!" (Hey! How goes it, my friend?!)
• doctor → tordo (doctor, usually meaning physician but also used for lawyers. "Tordo" is also the name in Argentina of the opportunistic shiny cowbird).
• carne → nerca (meat, not to confuse with "merca")
• pizza → zapi ("Zapi" even became the name of a pizza chain.)
• baño → ñoba (bathroom) e.g., "Ahora vengo, voy al ñoba un toque" (BRB, gotta go to the john real quick.)
• boludo → dolobu or dobolu (dumb, moron, silly, fool), e.g., "Dale, no te hagás el dolobu" (Yeah right! Don't play the fool here – like you don’t know that.)
• mujer → jermu (woman; the vesre version mostly means "wife") e.g., "¡Guarda que ahí viene tu jermu!" (Watch out, here comes your woman.)
• pelado → dolape (bald person)
• pelao → laopé (boy) (Panamanian Spanish, from pelado)
• calle → lleca (street)
• perro → rope (dog)
• gato → toga (cat) "Toga" most likely refers to a female prostitute.
• piña → ñapi (a blow with a fist - usually aimed at the face or stomach)
• panza → zapán (a pot/beer belly; protruding stomach - said of a male)
• japonés → ponja (Japanese person)
• patrón → trompa (male boss or supervisor)
• pedo → dope (literally "fart", but used in the expression "estar al dope" = "estar al pedo" = to be sitting around, wasting time)
• barrio → rioba (neighborhood; the "hood")
• pelotas → talopes (literally "balls" meaning "testicles"; used in the expression "¡Las talopes!" = "¡Las pelotas!" = No way; It ain't gonna happen!), though "tarlipes" (vesre for perlitas, literally little pearls) is used more often.
• cabeza → zabeca (someone's head)
• peso → sope (Uruguayan/Argentinian Peso)
• pene → nepe
• birra → rabi (from Italian meaning "beer")

Occasionally, vesre is a stepping-stone towards further obfuscation, achieved by evolving into a longer word. For example:

• coche (car) → checo → checonato (after a once-famous sportsman named Cecconatto)
• cinco (the number five) → cocín → cocinero (literally cook; used mostly on the racetrack to mean "the five horse")

The original and vesre versions of a word are not always synonyms; sometimes the reversal adds some extra nuance to the meaning. For instance, the word hotel bears the same meaning as in English (i.e. a normal tourist hotel), whereas telo implies that the establishment is actually a love hotel. Listen to examples

These reversed words are only spoken; rarely found in writing.

In English - Pig Latin; (Not exactly with the same morphological construction but similar in purpose and tone)

Colloquial French has a form of intentional metathesis known as verlan.

Greek has Podaná with the same morphological construction.

Tagálog, a language of the Philippines, also has a similar construct known as binaliktad, lit. "inverted."

Serbian has a form of slang called Šatrovački followed in the 1990s with a more ambiguous slang called utrovački.

Romanian has totoiana with a similar morphological construction, spoken in the village of Totoi.