This is the 128th most frequent Turkish word.
hiçbir
"None" or "no" (used to indicate absence or lack).
In this sentence, 'hiçbir' denotes 'none' or 'no any', referring to an absolute negation in a statement.
Hiçbir doğruyu söylemiyor.
Nobody tells the truth.
Here, 'hiçbir' is used with 'şeye' to mean 'nothing', indicating a negation without exceptions.
Hiçbir şeye dokunmadı.
He/She didn't touch anything.
'Hiçbir' is used to express 'no' with regard to people, implying that there are no exceptions.