Articulated Prepositions in Italian

Overview

In Italian, five common prepositions — di, a, da, in, su — fuse with the definite article that follows them into a single word called a preposizione articolata (articulated preposition). Instead of saying "di il libro" you say del libro; instead of "a la stazione" you say alla stazione. These contractions are not optional — using the two words separately sounds wrong and is considered a grammatical error.

Because Italian has seven definite article forms (il, lo, la, l', i, gli, le), each of the five prepositions produces seven contractions, giving you a grid of 35 forms. That may sound daunting, but the patterns are highly regular: once you know the five prepositions and the seven articles, the combinations follow predictable rules. Most learners memorize the table quickly because the forms appear in almost every sentence.

Before tackling articulated prepositions, make sure you are confident with Definite Articles, since every contraction is built from a preposition plus an article you already know.

How It Works

The Full Contraction Table

Each row is one preposition; each column is one definite article. The cell shows the resulting articulated preposition.

	il	lo	la	l' (m/f)	i	gli	le
di	del	dello	della	dell'	dei	degli	delle
a	al	allo	alla	all'	ai	agli	alle
da	dal	dallo	dalla	dall'	dai	dagli	dalle
in	nel	nello	nella	nell'	nei	negli	nelle
su	sul	sullo	sulla	sull'	sui	sugli	sulle

How the Combinations Work

1. di + article → the preposition di drops its vowel and merges: di + il = d-el → del, di + lo = dello, di + gli = degli, etc. The l' forms keep the apostrophe: di + l' = dell'.
2. a + article → a simply attaches: a + il = al, a + lo = allo, a + gli = agli.
3. da + article → same pattern as a: da + il = dal, da + lo = dallo, da + gli = dagli.
4. in + article → in changes to ne- before attaching: in + il = nel, in + lo = nello, in + gli = negli.
5. su + article → su simply attaches: su + il = sul, su + lo = sullo, su + gli = sugli.

When NOT to Contract

The prepositions con, per, tra/fra do not form standard contractions in modern Italian. You write them separately: con il ragazzo, per la strada, tra gli amici. (Historically col and coi existed for con + il and con + i, but they are now rare and optional.)

Choosing the Right Article

The article inside the contraction follows the same rules as standalone definite articles. You still need to check the noun's gender, number, and first letter. For example, studente (masculine, starts with s + consonant) takes lo, so "on the student" is sullo studente, not sul studente.

Examples in Context

Italian	English	Breakdown
Il libro del professore è interessante.	The professor's book is interesting.	di + il → del
Vado alla stazione.	I'm going to the station.	a + la → alla
Vengo dalla Francia.	I come from France.	da + la → dalla
Le chiavi sono sul tavolo.	The keys are on the table.	su + il → sul
Il gatto è nell'armadio.	The cat is in the wardrobe.	in + l' → nell'
Parliamo degli esami.	We're talking about the exams.	di + gli → degli
Scrivo agli amici.	I'm writing to the friends.	a + gli → agli
Torno dai nonni domani.	I'm going back to my grandparents' tomorrow.	da + i → dai
Il quadro è sulla parete.	The painting is on the wall.	su + la → sulla
Le notizie dei giornali sono allarmanti.	The newspaper reports are alarming.	di + i → dei
I bambini giocano nel parco.	The children play in the park.	in + il → nel
Il nome dello studente è Marco.	The student's name is Marco.	di + lo → dello
Andiamo alle isole quest'estate.	We're going to the islands this summer.	a + le → alle
Esco dalle lezioni alle tre.	I get out of classes at three.	da + le → dalle
Ci sono fiori sugli scaffali.	There are flowers on the shelves.	su + gli → sugli

Common Mistakes

Forgetting to contract

• Wrong: Vado a la stazione.
• Right: Vado alla stazione.
• Why: Contraction is mandatory with di, a, da, in, su. Writing the preposition and article separately is a clear error.

Using the wrong article inside the contraction

• Wrong: Il nome del studente (treating studente like it takes il)
• Right: Il nome dello studente
• Why: Studente begins with s + consonant, so its article is lo, and di + lo = dello. The same first-letter rules from definite articles still apply inside contractions.

Confusing "dei" (di + i) with the partitive meaning

• Wrong: Thinking dei libri always means "some books"
• Right: I prezzi dei libri means "the prices of the books" — here dei is simply di + i. Context tells you whether it is possessive/specification or partitive.
• Why: The form is identical; meaning depends on sentence structure.

Contracting prepositions that should stay separate

• Wrong: col professore (in formal writing), pel giardino
• Right: con il professore, per il giardino
• Why: Con and per do not form standard contractions in modern Italian. Keep them as two words.

Dropping the apostrophe in l' forms

• Wrong: nelo armadio, delo uomo
• Right: nell'armadio, dell'uomo
• Why: When the article is l' (before a vowel), the contraction keeps the apostrophe: nell', dell', all', dall', sull'.

Practice Tips

1. Drill with the table. Print or copy the 5 × 7 grid and quiz yourself by covering the answers. Start with one preposition at a time — master di + all articles before moving to a, and so on. Within a few sessions the forms will feel natural.

2. Reverse-engineer real sentences. Take any Italian text and highlight every articulated preposition you find. For each one, mentally split it back into preposition + article and confirm which article matches the noun. This trains both recognition and the underlying article-selection logic.

3. Combine with listening practice. Articulated prepositions are extremely common in spoken Italian. Listen to a short podcast or dialogue and try to catch every contraction. Pause and repeat it out loud — the rhythm of nella casa, sugli scaffali, dall'ufficio will stick faster through your ears than through flashcards alone.

Related Concepts

• Prerequisite: Definite Articles — you must know all seven article forms before combining them with prepositions
• Next step: Partitive Articles — di + definite article used to express "some / any" (dei libri = some books)