This is the 89th most frequent Bulgarian word.
ясно
Clear; understandable.
'ясно' describes the clarity of the weather.
Времето беше ясно и приятно.
The weather was clear and pleasant.
'ясно' is used as a standalone exclamation to express understanding.
Ясно! Ще направя каквото казваш.
Understood! I will do as you say.
'ясно' indicates the comprehensibility of the explanation.