This is the 10589th most frequent Turkish word.
bırakmadığını
"That you/they have not let go."
In this sentence, 'bırakmadığını' is used to indicate that the subject did not cease continuing an action (working tirelessly) despite circumstances. It combines 'bırakmak' (to leave or quit) with a negation and a transformed tense indicating reported speech or thought.
Onun zorluklar karşısında pes etmediğini ve yılmadan çalışmayı bırakmadığını biliyorum.
I know that he/she did not give up and continued to work tirelessly when faced with difficulties.
Here, 'bırakmadığını' is employed to refer to not stopping or ceasing an action (the completion of cleaning). It reflects on a reported past action or statement.
Evi temizlemeye başladığını, ama tam olarak bitirmeyi bırakmadığını söyledi.
He/She said that he/she started cleaning the house but did not cease to complete it fully.
In this context, 'bırakmadığını' suggests that the subject maintained or persisted with the hobby of painting, showing continuity of a positive action.