Where does “சுவச்சம்” come from?

சுவச்சம் (Tamil) comes from Sanskrit स्वच्छ — clear; pellucid; pure, clear, transparent.

Ancestry of “சுவச்சம்”, step by step

Step	Language	Word	Meaning
1	Sanskrit	स्वच्छ	clear; pellucid; pure, clear, transparent

சுவச்சம் — Etymology, Origin & Word History | Etymology Explorer