isanghage oneureun jami an wayo.

-게 turns an adjective into an adverb, similar to -ly in English.

• 이상하다 = to be strange, odd
• 이상하게 = strangely, in a strange way

So 이상하게 오늘은... means something like Strangely, today... or For some reason, today...

In this sentence, 이상하게 comments on the whole situation, not just one word.

오늘은 means as for today or today, at least.

The particle 은/는 marks today as the topic and often adds a contrastive nuance. Here it can imply:

• Usually I sleep fine, but today...
• As for today, something is different

So 오늘은 is not just plain today. It subtly highlights today as special or contrasted with other days.

Compare:

• 오늘 잠이 안 와요. = I can't sleep today.
• 오늘은 잠이 안 와요. = Today, for some reason, I can't sleep. / Today in particular, I can't sleep.

Because in Korean, 잠이 오다 is a set expression meaning sleep comes or to feel sleepy.

So:

• 잠이 오다 = to get sleepy / for sleep to come
• 잠이 안 오다 = for sleep not to come / not to feel sleepy / not be able to fall asleep

Here, 잠 is treated as the thing that comes, so it takes the subject marker 이/가.

That is why you get:

• 잠이 와요 = Sleep is coming / I’m getting sleepy
• 잠이 안 와요 = Sleep isn’t coming / I can’t fall asleep

This is a very natural Korean way to express the idea.

Yes — that is exactly how Korean expresses it.

English often says:

• I’m sleepy
• I can’t sleep

Korean often conceptualizes it as:

• Sleep comes
• Sleep doesn’t come

So 잠이 와요 literally means sleep comes, but naturally it means:

• I’m getting sleepy
• I feel sleepy

And 잠이 안 와요 literally means sleep doesn’t come, but naturally it means:

• I can’t fall asleep
• I’m not getting sleepy

It is one of those expressions where the Korean structure is different from the English way of thinking.

안 is the common short negation meaning not.

• 오다 = to come
• 와요 = comes / is coming
• 안 와요 = does not come / isn’t coming

So:

• 잠이 와요 = sleep comes
• 잠이 안 와요 = sleep doesn’t come

This is the short-form negation in Korean:

• 안 + verb/adjective

You could also say:

• 잠이 오지 않아요

That means the same thing but sounds a bit more formal or written.

Because Korean is basically an SOV language, and the verb normally comes at the end.

This sentence is organized like this:

• 이상하게 = strangely
• 오늘은 = as for today
• 잠이 = sleep
• 안 와요 = doesn’t come

So the Korean order is closer to:

Strangely, as for today, sleep doesn’t come.

That is normal Korean sentence structure.

와요 is in the 해요체 style, which is the standard polite conversational form.

So 잠이 안 와요 is polite and natural in everyday speech.

Related forms:

• 잠이 안 와. = casual / plain spoken
• 잠이 안 와요. = polite everyday speech
• 잠이 안 옵니다. = formal, more stiff or formal

If you are talking to friends, you might hear 잠이 안 와. If you are speaking politely, 잠이 안 와요 is very common.

It can definitely sound softer than the English word strangely.

In this sentence, 이상하게 often means something like:

• for some reason
• oddly enough
• somehow
• weirdly

So the speaker is not necessarily saying something is truly bizarre. It often just means:

It’s kind of odd — today I can’t fall asleep.

That softer, conversational feeling is very common.

They are related, but not identical.

• 잠이 안 와요 = I can’t fall asleep / I’m not getting sleepy
  
  • focus: sleep isn’t coming
• 못 자요 = I can’t sleep
  
  • focus: I am unable to sleep

잠이 안 와요 often refers specifically to the feeling of lying awake and not becoming sleepy.

못 자요 is broader and can be used if something prevents sleep, such as noise, stress, or circumstances.

So in this sentence, 잠이 안 와요 sounds especially natural because it describes the experience of sleep not coming.

In Korean, subjects like I are often omitted when they are obvious from context.

So even though the sentence does not say 저는 or 나는, the meaning is naturally understood as:

• I can’t fall asleep today
• Today, I’m not getting sleepy

You could say:

• 저는 이상하게 오늘은 잠이 안 와요.

But that usually sounds unnecessary unless you want contrast, such as:

• 저는 이상하게 오늘은 잠이 안 와요. 다른 사람들은 다 졸린데요.
  Strangely, I can’t sleep today. Everyone else is sleepy.

So omission is normal here.

Yes, Korean word order is somewhat flexible as long as the particles make the roles clear.

For example, these are all possible:

• 이상하게 오늘은 잠이 안 와요.
• 오늘은 이상하게 잠이 안 와요.
• 오늘은 잠이 이상하게 안 와요.

However, they do not all feel exactly the same.

The original 이상하게 오늘은 잠이 안 와요 sounds very natural because it sets the tone first:

Strangely, today, sleep won’t come.

That ordering makes 이상하게 feel like a comment on the whole sentence.