This is the 7th most frequent Czech word.
ale
"Ale" in Czech means "but" in English.
Here, 'ale' is used as a conjunction to contrast two parts of the sentence.
Chci jít do parku, ale prší.
I want to go to the park, but it's raining.
In this instance, 'ale' introduces a contrast or exception to the preceding clause.
Slyšela jsem, že přijdeš, ale nevěděla jsem, kdy.
I heard that you would come, but I didn't know when.
The word 'ale' highlights an opposing result or decision compared to the first part of the sentence.