This is the 5180th most frequent Turkish word.
inat
"İnat" means "stubbornness" or "obstinacy" in English.
The word 'inatla' here is derived from 'inat' and is used as an adverb to describe a manner of acting stubbornly.
Ali inatla fikirlerini değiştirmedi.
Ali stubbornly did not change his ideas.
The word 'inadım' is used as a possessive form of 'inat' to indicate a personal instance of stubbornness.
Ondan özür dilemek istemiyorum, bu benim inadım.
I don't want to apologize to him; this is my stubbornness.
The word 'inat etmesi' uses 'inat' as part of the verb phrase, meaning the act of stubborn behavior.