Țeava este sub chiuvetă.

Because Romanian usually puts the definite article at the end of the noun, not as a separate word before it.

• țeavă = pipe
• țeava = the pipe

So -a here is the attached definite article. This is one of the first big differences English speakers notice in Romanian.

Este means is. It is the 3rd person singular form of a fi = to be.

So:

• Țeava este sub chiuvetă. = full form
• Țeava e sub chiuvetă. = shorter, very common everyday form

Both are correct.
E is extremely common in normal speech, while este can sound a bit more neutral, careful, or formal.

This is a very common question.

After prepositions, Romanian often uses a bare noun in location expressions where English would naturally say the.

So sub chiuvetă is a normal way to say under the sink in context.

A few useful points:

• chiuvetă = sink
• chiuveta = the sink
• sub chiuvetă can still be understood as a definite location in natural Romanian
• sub chiuveta is also possible, but it sounds more explicitly definite or more specific

Romanian often does this with places and locations:

• pe masă = on the table
• sub pat = under the bed
• în casă = in the house / at home

So even though the noun looks indefinite to an English speaker, the phrase can still be interpreted naturally as a definite place.

Yes, chiuvetă is feminine.

You can tell from its form and from how Romanian nouns usually behave:

• singular indefinite: chiuvetă
• singular definite: chiuveta

The ending -ă is very often a sign of a feminine noun, though not always in every case. For learners, it is a useful clue.

Also:

• o chiuvetă = a sink
• două chiuvete = two sinks

That plural pattern also fits a feminine noun.

A helpful approximation is:

TSEA-va YES-te sub kyu-VE-tuh

A few important sounds:

• ț = ts, like the end of cats
• ea in țeava sounds like ea in yeah, but shorter
• este is often pronounced YES-te
• ch before i or e sounds like a hard k, so chiuvetă starts with kyu-
• ă is a schwa sound, like the last sound in sofa

A rough stress guide:

• ȚEA-va
• ES-te
• chiu-VE-tă

No, not completely.

Țeava este sub chiuvetă is the neutral, straightforward order. But Romanian can move things around for emphasis or style.

For example:

• Țeava este sub chiuvetă. = neutral
• Sub chiuvetă este țeava. = emphasizes the location
• Țeava e sub chiuvetă. = same meaning, more everyday

Romanian word order is generally more flexible than English, but the neutral subject + verb + location order is a very safe choice for learners.

In modern Romanian, sub normally takes the accusative.

So in this sentence, chiuvetă is after a preposition and is functioning in the accusative.

For a learner, the important part is this:

• you do not usually see a special different form here
• the noun often looks the same as the dictionary form

So even though chiuvetă is in the accusative after sub, its form does not change visibly in this sentence.

Yes, very important.

Romanian diacritics are not decorative; they are part of the spelling.

In this sentence:

• Ț is not the same as T
• ă is not the same as a

So:

• țeava is the correct spelling
• teava is a non-standard spelling without diacritics

People may still understand text without diacritics in informal typing, but for learning Romanian, you should learn and use the correct forms with diacritics whenever possible.

Yes, this sentence is actually a good example of why gender matters in Romanian.

Both main nouns here are feminine:

• țeavă → țeava
• chiuvetă → chiuveta

Gender matters because it affects:

• the article
• adjectives
• some pronouns
• plural forms

So it is useful not just to learn a noun by itself, but to notice patterns like:

• o țeavă / țeava
• o chiuvetă / chiuveta

That will help you build correct Romanian more naturally later.