This is the 7th most frequent Hungarian word.
de
"But"
The conjunction 'de' is used here to contrast two clauses, expressing a conflict between the speaker’s desire and reality.
Szeretnék elmenni a moziba, de nincs időm.
I would like to go to the cinema, but I have no time.
In this context, 'de' introduces a clause that provides an exception or additional caution to the preceding statement.
Szép az idő, de azért hozd magaddal az esernyőt.
The weather is nice, but still, bring an umbrella with you.
Here, 'de' connects two clauses where the second clause mitigates the expectation set by the first one.