TOO LIT vs LIGHT

There is the irregular verb 'to light' (light/lit/lit), and there's the noun/adjective 'light'.

This room is too light; it is a very light room.

Shall I light the lamp?
I am lighting the lamp.

I lit the lamp just now.

The lamp has been lit.

I'm looking for the adjective,
can't lit be used as an adjective?

Thank you

The (past) participle adjective is lit, but I believe lighted is also used.

A lit lamp. (A lighted lamp.)
The lamp is lit. (The lamp is lighted.)

Note that this is different in meaning from "a light lamp", which is a lamp that is bright or has little weight, while "a lit lamp" is a lamp that has been lit.

So basically you can say both

The room is too light/lit.

thank you

LIT or LIGHT or BOTH

1 This room is too lit/light.

I use "lit" mostly when something is on fire as intended.

You light a fire. Then the fire is lit.
You light a cigar. Then the cigar is lit.

In the case at hand, I say, "It's too bright in this room".

There is the usage "a well lit room", however.

The usag