Italian (italiano, or lingua italiana) is a Romance language spoken by about 63 million people as a first language, primarily in Italy. In Switzerland, Italian is one of four official languages. It is also the official language of San Marino. It is the primary language of the Vatican City. Standard Italian, adopted by the state after the unification of Italy, is based on Tuscan (in particular on the dialects of the cities of Florence, Pisa and Siena) and is somewhat intermediate between the Italo-Dalmatian languages of the South and Northern Italian languages of the North.

Unlike most other Romance languages, Italian has retained the contrast between short and long consonants which existed in Latin. As in most Romance languages, stress is distinctive. Of the Romance languages, Italian is considered to be one of the closest to Latin in terms of vocabulary. Lexical similarity is 89% with French, 87% with Catalan, 85% with Sardinian, 82% with Spanish, 78% with Rhaeto-Romance, 77% with Romanian, and 52% with Maltese.

Writing system

main: Italian alphabet Italian is written using the Latin alphabet. The letters J, K, W, X and Y are not considered part of the standard Italian alphabet, but appear in loanwords (such as jeans, whisky, taxi). X has become a commonly used letter in genuine Italian words with the prefix extra-. J in Italian is an old-fashioned orthographic variant of I, appearing in the first name "Jacopo" as well as in some Italian place names, e.g., the towns of Bajardo, Bojano, Joppolo, Jesolo, Jesi, among numerous others, and in the alternate spelling Mar Jonio (also spelled Mar Ionio) for the Ionian Sea. J may also appear in many words from different dialects, but its use is discouraged in contemporary Italian, and it is not part of the standard 21-letter contemporary Italian alphabet. Each of these foreign letters had an Italian equivalent spelling: gi for j, c or ch for k, u or v for w (depending on what sound it makes), s, ss, or cs for x, and i for y.

• Italian uses the acute accent over the letter E (as in perché, why/because) to indicate a front mid-close vowel, and the grave accent (as in tè, tea) to indicate a front mid-open vowel. The grave accent is also used on letters A, I, O, and U to mark stress when it falls on the final vowel of a word (for instance gioventù, youth). Typically, the penultimate syllable is stressed. If syllables other than the last one are stressed, the accent is not mandatory, unlike in Spanish, and, in virtually all cases, it is omitted. In some cases, when the word is ambiguous (as principi), the accent mark is sometimes used in order to disambiguate its meaning (in this case, prìncipi, princes, or princìpi, principles). This is, however, not compulsory. This demonstrated how meanings may change if a word is not pronounced in the right way (as in è, third person of the verb to be, and e, "and"). Rare words with three or more syllables can confuse Italians themselves, and the pronunciation of Istanbul is a common example of a word in which placement of stress is not clearly established. Turkish, like French, tends to put the accent on ultimate syllable, but Italian doesn't. So we can hear "Istànbul" or "Ìstanbul". Another instance is the American State of Florida: the correct way to pronounce it in Italian is like in Spanish, "Florìda", but since there is an Italian word meaning the same ("flourishing"), "flòrida", and because of the influence of English, most Italians pronounce it that way. Dictionaries give the latter as an alternative pronunciation.