Questions & Answers about Þú lítur mjög þreytt út.
Yes. Líta út is a very common Icelandic expression meaning to look / to appear / to seem.
So in this sentence, lítur ... út works together as a unit:
- Þú lítur ... út = you look / you appear
It is not the same as English look out.
Lítur is the present tense, 2nd person singular form of the verb líta.
A few present-tense forms are:
- ég lít = I look
- þú lítur = you look
- hann/hún/það lítur = he/she/it looks
So Þú lítur simply means you look.
Because líta út is a verb + particle expression, and in Icelandic the particle is often separated from the main verb.
In this kind of sentence, the normal pattern is:
- líta + description + út
So:
- Þú lítur mjög þreytt út
That is more natural than putting út directly after lítur here.