Formal:
* ரொம்ப நல்லது (rompa nallathu): This is the most common and formal way to say "very nice". It literally translates to "very good".
* அருமை (arumai): This means "excellent" or "wonderful" and is a slightly more emphatic way to say "very nice".
Informal:
* ரொம்ப சூப்பர் (rompa super): This is a casual way to say "very nice" and is often used with friends or family.
* ரொம்ப லவ் (rompa lav): This translates to "very love" and is a very informal way to express appreciation or liking.
You can also use a combination of these words to express different shades of "very nice". For example:
* ரொம்ப நல்லது, அருமை (rompa nallathu, arumai): This means "very good, excellent" and is a way to express a high level of appreciation.
* ரொம்ப சூப்பர், ரொம்ப லவ் (rompa super, rompa lav): This is a very informal way to say "very nice" and shows a high level of enthusiasm.
Remember that the best way to say "very nice" in Tamil will depend on the context and the people you are speaking to.