This is the 124th most frequent Serbian word.
буду
The Serbian word "буду" is a form of the verb "бити" (to be) and means "they will be" in the future tense.
The word 'буду' is used here as the subjunctive form of the verb 'бити' (to be), indicating a future condition.
Ја ћу бити овде када они буду стигли.
I will be here when they arrive.
In this case, 'буду' is part of a subordinate clause expressing necessity or importance, showing a condition tied to readiness.
Важно је да они буду спремни за испит.
It's important that they are ready for the exam.
Here, 'буду' is used to frame a subjunctive past desire or preference, in the context of the speaker's retrospective view.