Bagajul rămâne ascuns.

Bagajul means the luggage / the baggage.

The base noun is bagaj = luggage, baggage.
The ending -ul is the Romanian definite article, attached to the end of the noun instead of being a separate word like English the.

• bagaj = luggage / baggage
• bagajul = the luggage / the baggage

This is very common in Romanian:

• om = man
• omul = the man

Rămâne means remains / stays, not just is.

So:

• Bagajul este ascuns = The luggage is hidden.
• Bagajul rămâne ascuns = The luggage remains / stays hidden.

Using rămâne adds the idea that the luggage continues in that state.

Rămâne is the 3rd person singular present form of the verb a rămâne = to remain / to stay.

Here it matches the subject bagajul, which is singular:

• eu rămân = I remain
• tu rămâi = you remain
• el/ea rămâne = he/she/it remains

So Bagajul rămâne = The luggage remains.

A rough pronunciation is ruh-MUH-nuh, but that is only approximate.

The special vowels are important:

• ă = a short, relaxed vowel, like the a in about
• â = a close central vowel, a sound English does not really have

So in rămâne:

• ră- has ă
• -mâ- has â

Romanian spelling is fairly consistent, so getting used to these two vowels is very useful.

Ascuns means hidden.

It comes from the verb a ascunde = to hide.
In this sentence, ascuns works like an adjective meaning hidden / concealed.

So:

• Bagajul rămâne ascuns = The luggage remains hidden.

Depending on context, English could also translate it as concealed.

Because bagajul is a singular neuter noun, and in Romanian, neuter nouns behave like masculine in the singular and like feminine in the plural.

So in the singular, the adjective takes the masculine singular form:

• bagajul → singular neuter
• adjective form used: ascuns

Compare:

• singular: bagajul ascuns
• plural: bagajele ascunse

So ascuns is the correct agreement form here.

Yes, in Romanian bagaj is grammatically singular here.

Like English luggage, it can refer to baggage as a general mass or collective idea. So even if it may refer to multiple items in real life, the grammar is singular in this sentence:

• Bagajul rămâne ascuns. = The luggage remains hidden.

If you want to talk about separate items or plural baggage pieces, Romanian can also use plural forms in the right context, such as bagajele.

Because ascuns is a predicate adjective, not a noun phrase.

In Bagajul rămâne ascuns:

• bagajul = the subject
• rămâne = the linking verb
• ascuns = adjective describing the subject

Romanian does not use an article on adjectives in this kind of structure.

It works like English:

• The luggage remains hidden not
• The luggage remains the hidden

The normal, neutral word order is:

Subject + verb + adjective

• Bagajul rămâne ascuns.

Romanian does allow more flexibility than English, but changing the order usually changes the emphasis.

For example:

• Ascuns rămâne bagajul. = more literary or emphatic, something like Hidden is where the luggage remains / It is hidden that the luggage remains
• Rămâne ascuns bagajul. = possible in context, but less neutral

For learners, Bagajul rămâne ascuns is the standard pattern to remember.

No, not normally.

Bagajul rămâne ascuns means the luggage stays in a hidden state. It describes a condition, not the action of someone hiding it right now.

If you wanted is being hidden, Romanian would usually use a different structure, for example something built around a ascunde in a passive or impersonal way, depending on context.

So the basic idea here is:

• state: remains hidden not
• ongoing action: is being hidden

A natural plural version is:

Bagajele rămân ascunse.

Changes:

• bagajul → bagajele = the pieces of luggage / the bags
• rămâne → rămân = plural verb
• ascuns → ascunse = plural adjective form

This shows the neuter pattern clearly:

• singular neuter behaves like masculine: ascuns
• plural neuter behaves like feminine: ascunse

Yes.

Ascuns comes from a ascunde and is historically the past participle, but in many sentences like this it functions just like an adjective.

So in practice, you can think of it as:

• a participial adjective
• meaning hidden

This is very common in Romanian and in English too:

• hidden
• closed
• lost

They often behave like normal adjectives in sentences of this type.

You would make the noun indefinite:

Un bagaj rămâne ascuns.

Compare:

• Bagajul rămâne ascuns. = The luggage remains hidden.
• Un bagaj rămâne ascuns. = A piece of luggage / a bag remains hidden.

So the main change is:

• bagajul = the luggage
• un bagaj = a piece of luggage / a bag