Wow, that’s what you’re picking on? Irregardless:
Is it correct to say irregardless?
Irregardless is a nonstandard synonym for regardless, which means “without concern as to advice, warning, or hardship,” or “heedless.” Its nonstandard status is due to the double negative construction of the prefix ir- with the suffix -less. ... The bottom line is that irregardless is indeed a word, albeit a clunky one.