The Arabic word Zakat has been derived from Zaka which means :

The Arabic word Zakat has been derived from Zaka which means :

عربی لفظ زکوٰۃ زکا سے ماخوذ ہے جس کے معنی ہیں۔
Explanation

The word zakah also holds the senses of “justness, integrity, and honesty,” along with “justification and vindication,”

while zaka means to “sweeten” something.

The use of the word zakat 

which comes from the three Arabic root letters za • ka • wa and also za • ka • ya