This is the 6th most frequent Estonian word.
aga
"But" or "however."
Here, 'aga' is used to show a concession, acknowledging both the positive and negative aspects of the subject.
Ta on tore inimene, aga vahel võib ta närvi minna.
He is a kind person, but sometimes he can get on one's nerves.
In this sentence, 'aga' is used as a conjunction to indicate a contrast between two clauses.
Ma tahan minna randa, aga vihma sajab.
I want to go to the beach, but it's raining.
In this example, 'aga' introduces a hesitant or uncertain suggestion following a declaration of uncertainty.