In 1634 a Neapolitan courtier named Giambattista Basile published Lo cunto de li cunti, a collection of fifty fairy tales. It contains the first written European versions of Cinderella, Sleeping Beauty and Rapunzel, and the Brothers Grimm called it the first national collection of fairy tales in Europe.
It is not written in Italian. It is written in Neapolitan, because in 1634 that was a literary language with a court behind it.
This is the fact that reframes everything else. Neapolitan is not Italian spoken loudly. It is a language that had its own literature two hundred years before Italy existed.
What it actually is
il napoletano: a Romance language descended directly from Latin, in parallel with Tuscan rather than from it. Around five and a half million speakers across Campania and neighbouring regions. UNESCO lists it in its atlas of endangered languages, treating it as a language in its own right.
Italy grants it no official status, which is a political fact rather than a linguistic one.
The Spanish underneath
The single most revealing feature is the verb for having.
tene': to have, from tenere. Standard Italian uses avere for possession: ho fame, I am hungry. Neapolitan says tengo famme, using tenere, which is exactly what Spanish does with tengo hambre.
This is not coincidence and not borrowing at the edges. Naples was ruled by the Crown of Aragon and then by Spain from 1442 to 1707, two and a half centuries during which the administration, the court and a good part of the commerce ran in Spanish. The language kept the grammar.
Once you notice it, you find it everywhere. Speakers of Spanish arriving in Naples routinely report understanding more than their Italian should allow.
The words you will hear first
guaglione: a boy, a young man. The vocative guagliò is what you shout across a street.
jamme: let's go. From andiamo, and known worldwide from Funiculì, Funiculà without most people realising what language they were singing.
mo': now. Two letters where Italian needs adesso.
'o / 'a / 'e: the definite articles, reduced almost to nothing. The apostrophes are doing real work.
sfizio: a whim, a small indulgence, something done purely for pleasure. This one escaped into standard Italian and is now used across the country, usually without anyone knowing where it came from.
scugnizzo: a street child, the barefoot Naples urchin of a hundred years of photographs and film. Affectionate and slightly mythologised.
'o ssaje: you know. The doubled consonant is a genuine grammatical feature, not a typo.
uè: hey, the standard Neapolitan greeting call. Uè, guagliò is a complete opening.
mammà: mum, with the stress on the final syllable. The southern form, and used well into adulthood.
tutt'a post: all good, everything fine. The final vowel is gone, as it is almost everywhere.
The sound that confuses everyone
Neapolitan reduces unstressed final vowels to a schwa, the neutral uh sound. Written down it looks like the vowels are still there; spoken, they mostly are not. This is why guaglione sounds like guaglion, and why written Neapolitan and spoken Neapolitan feel like different systems to a learner.
la metafonia: metaphony, where a stressed vowel changes to reflect the ending that follows it. Russo and rossa, red, differ in the stem vowel and not only the ending. It is a systematic feature of the language and one that standard Italian lost.
Why any of this matters to a learner
Nobody needs to learn Neapolitan. Everyone in Naples speaks Italian and will use it with you.
But three things make the recognition worth having. A large share of what you overhear in the city is not Italian, so the difference between having thirty Neapolitan words and none is the difference between a city that is legible and one that is background noise.
Neapolitan song is one of the great European repertoires and it is not in Italian. 'O sole mio and Torna a Surriento are in this language.
And the surviving Spanish grammar is a genuinely interesting piece of history that you can hear in a fruit market, which is a rare thing.
The one to be careful with
Naples has an extensive vocabulary of insult and imprecation, some of it fairly baroque, and visitors sometimes collect it as a party trick. It is worth knowing that these are not neutral and that a foreigner deploying them lands differently from a local doing so. Recognise them, enjoy them, and leave them where they are. The same caution as the two Italian gestures in the gestures article.
How to learn thirty words of it
Save the sound, not the spelling. Written Neapolitan will mislead you about the vowels. Note down what you actually heard alongside what it turned out to be.
Give Translate the whole phrase. Reduced articles and schwa endings make single-word lookup nearly useless, and a full line gives the AI something to work with.
Then let repetition do it. Thirty words in a city where you hear them hourly is a fortnight of work.
The short version
Learn guaglione, jamme, mo' and sfizio, and notice tengo the first time you hear it, because that is four centuries of history in one verb.
And read that Neapolitan had Cinderella in print in 1634, which is a better argument for its status than any linguistic classification.
Heard something in Naples that Italian could not explain? Put the line into Vokabulo. Free to start on iPhone and iPad. 🌋
