This is the 4683rd most frequent Turkish word.
bırakmamak
To not let go or to not leave.
Negative infinitive use, meaning 'not to abandon or leave'.
Kalemini masanın üzerinde bırakamadım, çok değerliydi.
I couldn't leave your pen on the table; it was very valuable.
Use in negative context, meaning 'to stay with or not let go'.
Köpeğim beni parkta bir an bile yalnız bırakmadı.
My dog didn't leave me alone even for a moment in the park.
The context here involves preventing leaving behind, carefully ensuring possession.