This is the 868th most frequent Slovenian word.
vedeli
"Vedeli" means "knew" (past tense of "to know").
Here, 'vedeli' is employed in a future sense with the auxiliary verb 'boste', suggesting acquiring knowledge in the future.
Vedeli boste vse odgovore po koncu testa.
You will know all the answers after the test.
In this sentence, 'vedeli' is used as the past tense form of the verb 'vedeti', indicating a knowledge about an event in the past.
Mi nismo vedeli, da jutri dežuje.
We did not know that it would rain tomorrow.
In this question, 'vedeli' is used in a past participle form to inquire about prior knowledge.