Used by people who ignorantly mean to say regardless. According to webster, it is a word, but since the prefix "ir" and the suffx "less" both mean "not or with" they cancel each other out, so what you end up with is regard. When you use this to try to say you don't care about something, you end up saying that you do. Of course everyone knows what you mean to say and only a pompous,rude asshole will correct you.

A term used to reference cannabis/marijuana/weed.

A word used by uneducated people intending to sound intelligent. Often, the defendant will use this word in court in an attempt to impress the judge and jury. Educated people notice and those who use this word instantly identify themselves to educated people as being uneducated. Educated people rarely correct them because it helps educated people more easily identify them if they are well groomed.

An unnecessary mispronunciation of the word "regardless".

A word you should never, ever use in front of your English professor.

A double negative that while technically a word, is nearly always being incorrectly used instead of regardless. The people using this are usually pompous assholes who usually double down on irregardless being the correct word to use and are usually using it at the end of an email to be a passive aggressive shitheel.

this is not a fucking word... Wtf