Where does “கச்சேரி” come from?

கச்சேரி (Tamil) comes from Marathi कचेरी, from Hindi कचहरी, from Proto-Indo-Aryan kr̥tyagʰarikaH.

Ancestry of “கச்சேரி”, step by step

Step	Language	Word	Meaning
1	Marathi	कचेरी	—
2	Hindi	कचहरी	court; group, crowd
3	Proto-Indo-Aryan	kr̥tyagʰarikaH	—