הוא עצבני כשיש יותר מדי רעש במטבח.

In Hebrew, the verb to be is usually not stated in the present tense.

So:

• הוא עצבני = He is nervous / He is irritable / He gets annoyed
• Literally: he nervous

This is completely normal Hebrew. In past and future, Hebrew does use forms of to be when needed, but in the present tense it is usually omitted.

עצבני can be a little tricky because it does not always match one single English word.

Common meanings include:

• nervous
• tense
• irritable
• annoyed easily
• sometimes even agitated

In this sentence, because it is followed by כשיש יותר מדי רעש במטבח, it often sounds more like:

• He gets irritated when there is too much noise in the kitchen
• or He gets tense/nervous when there is too much noise in the kitchen

So the exact best translation depends on context.

Also note the form:

• עצבני = masculine singular
• feminine would be עצבנית

כשיש is made of two parts:

• כש־ = when
• יש = there is / there are

So:

• כשיש = when there is / when there are

In this sentence:

• כשיש יותר מדי רעש = when there is too much noise

This is a very common Hebrew structure.

Examples:

• כשיש זמן = when there is time
• כשיש בעיה = when there is a problem

יש is the standard Hebrew word for expressing existence, usually translated as:

• there is
• there are

So:

• יש רעש = there is noise
• יש הרבה אנשים = there are many people

In your sentence:

• כשיש יותר מדי רעש במטבח = when there is too much noise in the kitchen

Even though English uses there is, Hebrew does not need a separate word for there. יש alone does the job.

יותר מדי means too much or too many.

Word by word:

• יותר = more
• מדי = part of the fixed expression meaning too

Together:

• יותר מדי = too much / excessively

Examples:

• יותר מדי רעש = too much noise
• יותר מדי אנשים = too many people
• יותר מדי אוכל = too much food

It does not change for gender or number. The phrase stays the same.

רעש means noise, and like English noise, it often works as an uncountable noun.

So Hebrew says:

• יותר מדי רעש = too much noise

not something like too many noises in normal usage.

That is why singular רעש is perfectly natural here.

Because Hebrew often combines prepositions with ה־ (the).

Here:

• ב־ = in
• המטבח = the kitchen

When ב־ joins ה־, they contract:

• ב + המטבח → במטבח

So:

• במטבח = in the kitchen

This happens with other prepositions too:

• ל + הבית → לבית = to the house
• כ + הספר → כספר in the formal pattern, though some forms are less common in everyday speech depending on the word

For your sentence, במטבח is simply the normal way to say in the kitchen.

The sentence breaks down like this:

• הוא = he
• עצבני = nervous / irritable
• כשיש = when there is
• יותר מדי = too much
• רעש = noise
• במטבח = in the kitchen

So the literal order is:

• He irritable when-there-is too much noise in-the-kitchen

This is very normal Hebrew word order.

A natural English translation could be:

• He gets annoyed when there’s too much noise in the kitchen
• He’s nervous when there’s too much noise in the kitchen

depending on context.

It usually describes a general tendency or repeated situation.

So it often means something like:

• He gets annoyed whenever there is too much noise in the kitchen

Hebrew present tense can often express:

• a present state
• a habitual reaction
• a general fact

Without extra context, this sentence sounds like a general truth about him.

A common pronunciation would be:

hu ats-BA-ni kshe-YESH yo-TER mi-DAI RA-ash ba-mit-BACH

A more helpful breakdown:

• הוא = hu
• עצבני = atsbáni
• כשיש = ksheyésh
• יותר מדי = yotér midái
• רעש = rá'ash
• במטבח = bamitbákh

A few pronunciation notes:

• כ at the end of מטבח is the throaty kh sound, like German Bach or Scottish loch
• רעש has two syllables: ra-ash
• stress is usually on the last syllable in עצבני, יותר, מדי, and מטבח

Yes, that would also be possible, but it means something slightly different.

• הוא עצבני כשיש יותר מדי רעש במטבח
  = He gets irritated when there is too much noise in the kitchen

This focuses on the existence of noise.

• הוא עצבני כשהוא שומע יותר מדי רעש במטבח
  = He gets irritated when he hears too much noise in the kitchen

This focuses more on his experience of hearing it.

So your original sentence is simpler and more general.

The adjective would need to agree with the subject.

Masculine:

• הוא עצבני = He is nervous / irritable

Feminine:

• היא עצבנית = She is nervous / irritable

So the full feminine version would be:

• היא עצבנית כשיש יותר מדי רעש במטבח.

The rest of the sentence stays the same.