Something that is both literally true and legitimate at the same time. to show or declare to be legitimate or proper, well in In a literal manner or sense or Used to acknowledge that something is not literally true but is used for emphasis or to express strong feeling.
"Like, I went to the store this morning and I saw a man wearing a bunny suit. He was legiterately wearing a suit with pink fuzzy bunny ears and a cute little bunny tail."
"I bet if I say it enough I could make that a new trendy slang word. "