This is the 2426th most frequent Turkish word.
ihtiyacını
"Your need" or "his/her/its need" (depending on context).
The word 'ihtiyacını' is used to express personal need, and the suffix '-ını' indicates possession ('his need').
Kitabını bitirdikten sonra yeni kitap ihtiyacını fark etti.
After finishing his book, he realized his need for a new book.
Here, 'ihtiyacını' denotes a specific need ('energy need'), and the possessive form shows whose needs are referenced.
Çalışma sırasında enerji ihtiyacını karşılamak için çikolata yedi.
He ate chocolate to meet his energy needs during work.
In this example, 'ihtiyacını' refers to an essential or practical requirement for education, personalized by the possessive suffix.