This is the 358th most frequent Bulgarian word.
важно
Important.
The word 'важно' is used as an adjective in its neuter form, functioning as a subject complement to emphasize the importance of the subject.
Важно е да си подготвен за изпита.
It is important to be prepared for the exam.
Here, 'важна' is the feminine singular form of the adjective, describing the noun 'задача' (task).
Това е важна задача, която трябва да завършим днес.
This is an important task that we need to complete today.
Usage of 'важно' as in the neuter form reflects the generality of the importance in an impersonal structure.