תתרחקו מהדלת.

It is talking to more than one person.

The form תתרחקו is a plural you form, so it means something like you all move away.

A few useful comparisons:

• to one man: תתרחק or the imperative התרחק
• to one woman: תתרחקי or התרחקי
• to more than one person: תתרחקו or התרחקו

In everyday Hebrew, this plural form is usually used for a masculine plural or a mixed group, and very often speakers also use it generally for groups in speech.

Yes — it does look like a future form, because grammatically it is a 2nd person plural future form.

But in Modern Hebrew, future forms are very often used to give commands, instructions, warnings, or orders. So in context, תתרחקו can mean:

• you will move away
  or
• move away!

Here, the sentence is understood as a command/instruction, not a simple prediction.

This is very common in Hebrew, so learners should get used to the idea that future forms often do the job of imperatives.

Yes. התרחקו מהדלת is also correct.

That form, התרחקו, is the regular imperative plural of להתרחק.

So you can think of the contrast like this:

• התרחקו = the more direct imperative
• תתרחקו = a future form used as a command

In real Modern Hebrew, both types exist. The future-form command is very common in speech and instructions.

No, it is not a typo.

The verb תתרחקו belongs to the pattern called התפעל. In the future tense, verbs in this pattern often begin with forms like:

• ית-
• תת-
• נת-

So the double-looking start תת- is normal.

Very roughly:

• one ת is connected to the person of the verb
• the other ת is part of the verb pattern

So תתרחקו is exactly the kind of shape you should expect for this kind of verb.

The dictionary form is להתרחק, meaning to move away / to distance oneself.

Its root is ר-ח-ק, which has to do with distance or being far.

Related words from the same root include:

• רחוק = far
• מרחק = distance
• להרחיק = to move something away / to distance
• להתרחק = to move oneself away

That last one is important: להתרחק often has the sense of becoming distant or moving oneself away, not just moving something else.

מהדלת breaks down as:

• מ־ = from
• הדלת = the door

So literally it is from the door.

Hebrew often attaches short prepositions directly to the following word, so instead of writing separate words, Hebrew writes them together.

With vowels, it would be written:

מֵהַדֶּלֶת

Both are possible in Hebrew, but they are different in style.

• מ־ / מהדלת is the normal short attached form
• מן הדלת is the fuller form, often more formal, literary, or careful

In everyday Hebrew, the shorter attached form is much more common, so מהדלת is exactly what you would expect.

Because in Hebrew, the is usually not a separate word. It is the prefix ה־ attached directly to the noun.

So:

• דלת = door
• הדלת = the door

Then Hebrew can attach another prefix before that:

• מ־ = from
• ה־ = the
• דלת = door

Together: מהדלת = from the door

This stacking of little prefixes is very common in Hebrew.

A good approximation is:

ti-tra-kha-KOO me-ha-DE-let

A few pronunciation notes:

• the kh sound is like the sound in German Bach or the Hebrew letter ח
• תתרחקו is stressed at the end: -KOO
• דלת is delet

If you want the fully pointed form, it is:

תִּתְרַחֲקוּ מֵהַדֶּלֶת

By itself, it sounds like a direct instruction or order.

That does not necessarily mean rude — it depends on context. For example, it sounds completely normal in:

• a warning
• a security instruction
• a teacher speaking to a group
• a public announcement

But if you say it by itself in conversation, it can sound firm.

To make it softer, you could add בבקשה:

בבקשה, תתרחקו מהדלת.

You could also use a more formal public-instruction style such as:

נא להתרחק מהדלת
which means something like please keep away from the door.