"Regardless"

a secntence for regardless would be :

Regardless how much homework you have

you still have to clean your room

Regardless is not a preposition; it is commonly used as an adverb or adjective.

"Regardless" is the correct term to use. "Irregardless" is considered nonstandard and is often criticized for being a double negative (combining "ir-" and "regardless").

No, regardless does not mean mean. The meaning of "regardless" is similar to "nevertheless" and "anyway."

Example:

I gave him money, regardless of the fact that he had never paid me back in the past.