A lakcímkártya érvényes.

In Hungarian, the verb to be is usually left out in the present tense when the subject is third person singular or plural.

So:

• A lakcímkártya érvényes. = The address card is valid.
• literally: The address card valid.

But in other persons, Hungarian does use the verb:

• Én fáradt vagyok. = I am tired.
• Te fáradt vagy. = You are tired.

So this sentence is completely normal without a separate word for is.

A is the Hungarian definite article, meaning the.

Hungarian has two forms:

• a
• az

Which one you use depends on the sound at the beginning of the next word:

• a before a consonant
• az before a vowel

Here, the next word is lakcímkártya, which begins with l, a consonant, so you say:

• a lakcímkártya

If the next word began with a vowel, you would use az.

Yes. Hungarian often forms compound nouns by writing them as one word.

lakcímkártya is made from:

• lakcím = address of residence / registered address
• kártya = card

So together:

• lakcímkártya = address card / residence card / address registration card

This is very normal in Hungarian. English often uses separate words where Hungarian prefers one compound word.

Lakcím is made up of:

• lak- related to living/residing
• cím = address

So it literally means something like residential address or home address.

In real usage, lakcím usually means your official registered address.

Because here érvényes is not directly describing the noun inside a noun phrase; it is the predicate adjective of the sentence.

Compare:

• A lakcímkártya érvényes. = The address card is valid.
  • Here érvényes is the main statement about the subject.

But if you want to say the valid address card, then the adjective goes before the noun:

• az érvényes lakcímkártya

So:

• noun + adjective in this sentence structure = The card is valid
• adjective + noun inside a noun phrase = the valid card

Érvényes means valid, in force, or officially acceptable.

It is often used for things like:

• documents
• IDs
• tickets
• contracts
• rules
• permits

Examples:

• A jegy érvényes. = The ticket is valid.
• Az útlevél érvényes. = The passport is valid.

So in this sentence it means the card is still legally or officially usable.

A rough pronunciation guide:

• A = short aw / uh
• lakcímkártya ≈ LAK-tseem-KAAR-tyaw
• érvényes ≈ AIR-vay-nyesh

A few useful points:

• Stress in Hungarian is always on the first syllable of each word.
• í and á are long vowels.
• cím sounds like tseem.
• ty is a soft sound, somewhat like the t in British tune for some speakers, though not exactly.
• ny is like the ny in Spanish señor or the ni in onion.

So the stress pattern is:

• A LAKcímkártya ÉRvényes

In Hungarian, accent marks are not optional. They are part of the spelling and they usually show vowel quality and often vowel length.

For example:

• a and á are different vowels
• i and í are different
• e and é are different

So you must write:

• lakcímkártya
• érvényes

not forms without the accents.

These accents can change pronunciation and sometimes meaning, so they matter a lot.

Yes, but the basic neutral form is:

• A lakcímkártya érvényes.

You can also say:

• Érvényes a lakcímkártya.

This can sound more marked, depending on context, often putting more focus on érvényes.

Hungarian word order is more flexible than English, but changes in order often affect focus, emphasis, or topic rather than basic meaning.

For a learner, the safest default is:

• A lakcímkártya érvényes.

You would say:

• A lakcímkártya nem érvényes.

nem = not

It usually goes directly before the word or part it negates. Here it negates érvényes.

If you mean The address cards are valid, you say:

• A lakcímkártyák érvényesek.

Changes:

• lakcímkártya → lakcímkártyák = address cards
• érvényes → érvényesek = valid (plural predicate adjective)

Hungarian often marks plural on the noun, and adjectives used as predicates can also take plural marking.

Both parts are in the basic dictionary form, usually called the nominative.

• a lakcímkártya = the subject
• érvényes = predicate adjective

There is no special case ending here because the sentence is simply stating something about the subject.

Very often, yes, especially in official contexts. But in everyday speech, people may also shorten things depending on context.

For example, if everyone already knows what document is being discussed, someone might simply say:

• A kártya érvényes. = The card is valid.

Still, lakcímkártya is the normal full word for the document.

Then it would no longer mean The address card is valid. It would mean the valid address card.

Example:

• az érvényes lakcímkártya

So compare:

• A lakcímkártya érvényes. = The address card is valid.
• Az érvényes lakcímkártya = the valid address card

This is an important difference in Hungarian sentence structure.