What does "叱吒" mean?
The translations on internet are not very accurate. I will give the best translations of 叱咤 and 叱咤风云 below. :P

The word chì zhà can be written as 叱吒 or 叱咤, but not 叱诧 (chà）。

Originally, it means 大声吆喝、呵斥 (shouting loud and powerfully)。It is often used in the idiom 叱咤风云。It means 怒斥之声,令风云失色。形容轰动一时的人物。(Thundering voices out-powered roaring storms. It describes a phenomenal and influential character.)