What does "really" modify?

“Mr. X rushes at everything, without any consideration, and really without any regard to anything except his own vanity.”

What do you think “really” modifies?

Thank you.

In that sentence it’s used more as slang, or a casual term. All it seems to do there is make the sentence less formal, and doesn’t modify anything.

In a sentence “I really wish I could get that hat”, the term ‘really’ is exaggerating your desire to get the hat.

Thank you for your reply.