Zgarda este albastră.

Because Romanian usually puts the definite article at the end of the noun instead of using a separate word like the.

• zgardă = a collar / collar
• zgarda = the collar

So in this sentence, zgarda already includes the idea of the.

This is a normal pattern for many feminine nouns in Romanian.

The basic form is:

• zgardă = collar

When it becomes definite, the ending changes:

• zgarda = the collar

So the final -ă in the basic form is replaced by the definite ending -a. This is not random; it is part of how Romanian marks definiteness.

Este means is. It is the 3rd person singular present-tense form of the verb a fi (to be).

So:

• eu sunt = I am
• tu ești = you are
• el/ea este = he/she/it is

In Zgarda este albastră, este links the subject (zgarda) with the description (albastră), just like is in English.

Yes. E is a very common shorter form of este.

So both are correct:

• Zgarda este albastră.
• Zgarda e albastră.

The version with este can sound a little more formal or careful. In everyday speech, e is extremely common.

Because Romanian adjectives usually agree with the noun in gender and number.

Here, zgardă is a feminine singular noun, so the adjective also has to be feminine singular:

• albastru = blue, masculine/neuter singular
• albastră = blue, feminine singular

So:

• un guler albastru = a blue collar/collar part of clothing
• o zgardă albastră = a blue animal collar

The adjective changes form to match the noun.

Usually zgardă refers to an animal collar, especially something like a dog’s collar.

If you mean the collar of a shirt, coat, or jacket, Romanian normally uses guler instead.

So this sentence most naturally suggests an animal collar is blue, not a shirt collar is blue.

A good approximation is ZGAR-da.

A few useful points:

• The zg at the beginning is pronounced with both sounds: z
  • hard g
• The g is like the g in go, not like the g in giant
• The stress is on the first syllable: ZGAR-da

So do not simplify it to something like jar- or zar-. Keep both consonants.

A rough guide is al-BAS-trə.

Important details:

• Stress is on BAS
• The ă sound is a short neutral vowel, similar to the a in sofa for many English speakers
• The final cluster str is fully pronounced

So the ending is not albastraa or albastru. It ends with that short Romanian ă sound: al-BAS-trə.

Zgarda este albastră is the most neutral and natural word order: subject + verb + adjective.

Romanian can sometimes change word order for emphasis, but this basic order is the one learners should use first.

For example:

• Zgarda este albastră. = neutral statement

A different order may be possible in special contexts, but it can sound more literary, emphatic, or less natural for a beginner. So the safest pattern is the one in your sentence.

In normal standard Romanian, yes, you normally keep the verb to be in a sentence like this.

So:

• Zgarda este albastră. = correct
• Zgarda albastră. = not a normal full sentence in standard Romanian

English learners sometimes wonder if Romanian can drop is the way some languages do, but in this kind of simple present-tense statement, Romanian normally uses este or e.