El cuadro está un poco torcido en la pared.

Because estar is used for a temporary state or condition, while ser is used for more permanent or defining characteristics.

Here, torcido means the picture is crooked / not straight right now. That is a condition, so Spanish uses estar:

• El cuadro está torcido. = The picture is crooked.
• La mesa es redonda. = The table is round.

If you said es torcido, it would usually sound odd here, because a picture is not inherently “crooked” as part of its identity; it has just been hung crookedly.

In this sentence, cuadro means picture, painting, or framed picture hanging on a wall.

It is a very common word in Spanish for wall art or a framed image. Depending on context, cuadro can also mean other things, such as:

• painting
• picture frame / framed piece
• square (in some contexts)
• chart / table in more formal language

But in El cuadro está un poco torcido en la pared, the meaning is clearly the picture / framed picture.

Because cuadro is a masculine noun in Spanish, so it takes the masculine singular article el:

• el cuadro
• un cuadro

This is something you generally need to learn with the noun. The ending -o often suggests masculine, and that is true here.

Un poco means a little or slightly.

So:

• está un poco torcido = it is a little crooked

You can also say está poco torcido, but that is much less natural here. In everyday Spanish, un poco is the normal way to soften the statement.

Compare:

• Está torcido. = It’s crooked.
• Está un poco torcido. = It’s a little crooked.

So un poco makes the sentence sound more natural and less blunt.

Because torcido agrees with cuadro, and cuadro is masculine singular.

Spanish adjectives usually agree in gender and number with the noun they describe:

• el cuadro torcido = the crooked picture
• la puerta torcida = the crooked door
• los cuadros torcidos = the crooked pictures

Even though torcido comes after está, it still agrees with cuadro.

Here, torcido means something like:

• crooked
• not straight
• askew
• slanted

For a picture on a wall, the most natural English idea is crooked or askew.

In other contexts, torcido can also mean twisted:

• un tobillo torcido = a twisted ankle
• una rama torcida = a bent / twisted branch

So the exact English translation depends on context.

En la pared means on the wall.

It tells you where the picture is. Without it, the sentence is still correct:

• El cuadro está un poco torcido. = The picture is a little crooked.

Adding en la pared gives more context and makes it clear you are talking about the picture as it is hanging there.

In English we say on the wall, but in Spanish the usual expression is en la pared.

Because prepositions do not always match directly between languages.

Spanish commonly uses en where English uses on, in, or at, depending on context. With things located on walls, en la pared is the standard expression:

• Hay un reloj en la pared. = There’s a clock on the wall.
• El cuadro está en la pared. = The picture is on the wall.

So this is just a normal Spanish pattern you should learn as a chunk: en la pared.

Yes, but it changes the meaning.

• El cuadro está colgado en la pared. = The picture is hanging on the wall.
• El cuadro está un poco torcido en la pared. = The picture is a little crooked on the wall.

Colgado tells you it is hung up.
Torcido tells you it is not straight.

You can even combine them:

• El cuadro está colgado y un poco torcido. = The picture is hanging up and a little crooked.

Yes, Spanish allows some flexibility, though the original order is very natural.

Common possibilities include:

• El cuadro está un poco torcido en la pared.
• En la pared, el cuadro está un poco torcido.
• El cuadro está en la pared, un poco torcido. (possible, but less neutral)

The original version sounds the most straightforward and natural in ordinary speech.

Normally, no. In Spanish, you usually need an article with a noun like cuadro when you mean the picture:

• El cuadro está un poco torcido.

Leaving out the article sounds incomplete or unnatural in standard Spanish, unless you are using a special style such as labels, headlines, or notes.

A simple approximate pronunciation is KWA-dro.

Breakdown:

• cua sounds like kwa
• dro sounds like dro, with a Spanish r that is softer than the English r

The stress is on the first syllable:

• CUA-dro

The whole sentence is pronounced roughly like:

el KWA-dro es-TA oom PO-co tor-SEE-do en la pa-RED

A few notes:

• está is stressed on the last syllable: es-TA
• torcido is stressed on -ci-: tor-SEE-do
• pared is stressed on -red: pa-RED

Yes, it is understandable and natural. In Spain, you might also hear:

• torcido
• inclinado = tilted
• doblado is different and usually means bent/folded, so not the best choice here

For a picture on a wall, torcido is a good everyday word for crooked.

You may also hear people say things like:

• El cuadro está torcido.
• Ese cuadro está un poco inclinado.

Both can work, but torcido fits your sentence very well.

You would make the noun, article, and adjective plural:

• Los cuadros están un poco torcidos en la pared.

Changes:

• el → los
• cuadro → cuadros
• está → están
• torcido → torcidos

This is a good example of agreement in Spanish across the whole sentence.