सजावट बहुत अच्छी है।

• सजावट = decoration, decor, or the decoration
• बहुत = very
• अच्छी = good (feminine form)
• है = is

So the structure is basically: Decoration very good is, which in natural English becomes The decoration is very good or The decor is very nice.

Because सजावट is a feminine noun in Hindi.

The adjective अच्छा changes form to match the gender and number of the noun:

• masculine singular: अच्छा
• feminine singular: अच्छी
• masculine plural / mixed plural in many contexts: अच्छे

Since सजावट is feminine singular, the sentence uses अच्छी:

• सजावट बहुत अच्छी है।

In Hindi, grammatical gender often has to be learned with the noun. There are some patterns, but they are not always fully reliable.

For सजावट, you learn it as a feminine noun, and the sentence confirms that because the adjective appears in the feminine form अच्छी.

A good habit is to memorize new nouns together with an example:

• सजावट अच्छी है
  This helps you remember that सजावट behaves as feminine.

Because बहुत is modifying the adjective अच्छी.

It works like very in English:

• very good
• बहुत अच्छी

So:

• सजावट बहुत अच्छी है = The decoration is very good

In Hindi, intensifiers like बहुत usually come before the adjective or adverb they modify.

Hindi often puts the verb at the end of the sentence. This is one of the most important word-order differences from English.

English:

• The decoration is very good.

Hindi:

• सजावट बहुत अच्छी है।

So even though English puts is in the middle, Hindi normally puts है last.

Yes, it can be.

Hindi does not have articles like a, an, and the in the same way English does. So सजावट can mean:

• decoration
• the decoration
• sometimes even the decor

The exact English translation depends on context.

Yes. सजावट is often used for:

• decoration
• decorating
• decor
• arrangement of decorative elements

So depending on context, सजावट बहुत अच्छी है। could be translated as:

• The decoration is very good.
• The decor is very nice.
• The decorations look great.
  (less literal, but sometimes natural in English depending on context)

A simple learner-friendly pronunciation is:

sajaavat

More approximately:

• स = s
• जा = jaa
• व = somewhere between English v and w
• ट = a retroflex t sound, made with the tongue curled slightly back

So you can think of it roughly as suh-JAA-vut or sa-JAA-vut, though exact pronunciation depends on accent and how carefully you speak.

A common careful pronunciation is roughly bahut.

In everyday speech, many speakers shorten or soften it, so learners may hear something closer to:

• bahut
• bohat
• bahot

This variation is normal in real spoken Hindi/Urdu-influenced speech. But in writing, it is बहुत.

Yes.

• सजावट अच्छी है। = The decoration is good.
• सजावट बहुत अच्छी है। = The decoration is very good.

Adding बहुत just strengthens the description.

The adjective would usually change to the masculine form.

For example:

• कमरा बहुत अच्छा है। = The room is very good / nice.

Here:

• कमरा is masculine
• so the adjective is अच्छा, not अच्छी

Compare:

• सजावट बहुत अच्छी है।
• कमरा बहुत अच्छा है।

Yes, often that sounds more natural in English.

Although अच्छा / अच्छी / अच्छे literally often means good, in many everyday contexts it can also mean:

• nice
• pleasant
• fine
• lovely

So सजावट बहुत अच्छी है। can naturally be rendered as:

• The decoration is very good.
• The decor is very nice.
• The decor looks great.
  depending on the situation.

If you were talking about multiple decorations, you would usually use a plural noun and plural to be form:

• सजावटें बहुत अच्छी हैं। = The decorations are very good.

Changes:

• सजावट → सजावटें (plural)
• है → हैं (are)

The adjective अच्छी stays feminine plural in form here, which looks the same as the feminine singular form.

Yes, absolutely. It is a normal, natural Hindi sentence.

It works well in contexts like:

• commenting on wedding decorations
• talking about room decor
• praising festival decorations
• describing event setup

It is short, idiomatic, and grammatically complete.