Я ужасно устал после работы.

In Russian, Я устал is the normal way to say I am tired.

Grammatically, устал is the past tense masculine singular form of the verb устать, which means to become tired or to get tired. Russian often uses this kind of verb to express a resulting state:

• Я устал = I got tired / I am tired
• The idea is: I became tired, and now that is my state

A more adjective-like form exists, such as уставший, but that is not the most natural choice for a simple statement like this.

This is a very common point of confusion.

Russian uses the past tense form of устать because it focuses on the change that happened: the speaker became tired. But the result is still true now, so in English it is often translated as:

• I’m terribly tired after work
• or I got terribly tired after work

Both can fit depending on context.

So the Russian form is past tense, but the meaning often includes the present result.

Because устал is the masculine form.

In Russian past tense, verbs agree with the gender of the subject in the singular:

• Я устал — said by a man
• Я устала — said by a woman
• Мы устали — we were tired / we got tired

So if a female speaker says this sentence, it becomes:

• Я ужасно устала после работы.

Ужасно literally comes from a word related to horror or terrible, but in everyday speech it often just means:

• terribly
• awfully
• very

So in this sentence, ужасно устал means:

• terribly tired
• really tired
• extremely tired

It does not mean anything like horror-filled tired here. It is just an intensifier.

Yes, usually.

Compare:

• Я очень устал. = I am very tired.
• Я ужасно устал. = I am terribly / awfully / extremely tired.

So ужасно is often more emotional and stronger than очень.

Because the preposition после always takes the genitive case.

The base form is:

• работа = work / job

After после, it changes to genitive singular:

• после работы = after work

This is a pattern you should memorize:

• после урока = after the lesson
• после школы = after school
• после обеда = after lunch

So the ending -ы in работы is there because of the grammar required by после.

Usually после работы simply means after work in the everyday sense: after finishing work, after the workday, or after being at work.

Russian often does not use a possessive like my when English might. So:

• после работы can naturally mean after work or after my workday

It does not have to mean a specific piece of work unless the context makes that clear.

Yes. Russian word order is flexible.

The basic neutral order here is:

• Я ужасно устал после работы.

But you could also say:

• После работы я ужасно устал.
• Я после работы ужасно устал.

The meaning stays very similar, but the emphasis changes a little:

• После работы я ужасно устал puts more focus on after work
• Я ужасно устал после работы sounds neutral and natural

So word order in Russian often helps show emphasis rather than changing the core meaning.

The main word stresses are:

• Я — usually unstressed unless emphasized
• ужа́сно
• уста́л
• по́сле
• рабо́ты

So a rough guide is:

• ya oo-ZHAS-na oo-STAL POS-lye ra-BO-ty

Stress matters in Russian, so it is worth learning each word with its stress.

The dictionary form is устать.

Here is the basic idea:

• устать = to get tired / to become tired
• устал = masculine past singular
• устала = feminine past singular
• устало = neuter past singular
• устали = plural

This verb is perfective, which is one reason it works well for a completed change of state: I became tired.

The related imperfective verb is уставать, meaning to get tired in a repeated, ongoing, or habitual sense.

Yes. That is one of the important nuances here.

Because устал comes from устать (to become tired), the sentence can point to:

• the event: I got terribly tired after work
• the result: I’m terribly tired after work

Which translation sounds best depends on context. In many everyday situations, English prefers I’m terribly tired after work, but the Russian form itself naturally includes the idea that the tiredness came about after work.