When to say Lit-or Lighted?

Answer 1

"You can use both words; they're interchangeable."

That is a widely believed view, but incorrect. Typically you would use lit as a verb and lighted as an adjective before a noun.

While it may be acceptable to use lighted as a verb, one really shouldn't if they wish to be grammatically correct.

From the Cambridge dictionary:

Definition:

light (FLAME) noun

a light something which will produce a flame and cause burning, such as a match or a cigarette lighter:

Have you got a light, please?

light verb [I or T] lit or lighted, lit or lighted

to start to burn or to make something start to burn:

to light a fire

I can't get the cooker to light.

He lit his fifth cigarette in half an hour.

lighted adjective [before noun]

burning or starting to burn:

a lighted candle/match

a lighted fuse