This is the 10526th most frequent Turkish word.
bunaltan
Oppressive; stifling; overwhelming.
Here, "bunaltan" modifies "durum" (situation), emphasizing the difficulty or oppressiveness of the situation.
Bu kadar bunaltan bir durumla nasıl başa çıkıyorsunuz?
How do you cope with such an overwhelming situation?
In this case, "bunaltan" highlights the tiring and distressing nature of the complaints, pointing to their oppressive character.
Onun sürekli şikayetleri gerçekten bunaltan oluyor.
His constant complaints are truly becoming overwhelming.
In this sentence, "bunaltan" is used as an adjective describing the effect of hot weather as oppressive or overwhelming.