You can typically find the Ka Naazhigai font available for free download through community-shared links and design-focused platforms: Designer Sheik (YouTube/Blog)
Most standard apps do not allow custom font installation system-wide. However, you can use the font inside specific apps: Ka Naazhigai Tamil Font Free Download
The name "Naazhigai" refers to a unit of time in ancient Tamil history, implying a sense of timeless elegance. Designers love it because it breaks the monotony of round, bulky Tamil fonts and introduces a breathable, airy structure. You can typically find the Ka Naazhigai font