Irregardless

[Sonia]

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 dont 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.

[Becky]

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.

[PussyCat]

this is not a fucking word... Wtf

[Jessica]

An unnecessary mispronunciation of the word regardless.

[Donald Trump]

Irregardless is an illegitimate word, you [shitstains]! Putting the prefix Ir before the word regardless effectively makes it a double negative; thus the meaning of the word becomes: without without regard. so instead of the intended meaning, which is without regard, it becomes just the opposite: with regard to!
Irregardless is a non-word that many a [tool] mistakenly believe to be correct usage in formal style, when in fact it is used chiefly in nonstandard speech or uneducated writing. Coined in the United States in the early 20th century, it has met with a blizzard of condemnation for being an improper yoking of irrespective and regardless and for the logical absurdity of combining the negative ir- prefix and -less suffix in a single term. Although one might reasonably argue that it is no different from words with redundant affixes like [debone] and [unravel], it has been considered a blunder for decades and will probably continue to be so.

[Jessica]

An oft-word that is used regardless of its nonexistence—probably because of its perceived imaginary union between irrespective and regardless.

[Britney]

The kind of thing Dubya would say when he means to say regardless. Its a bastardized version of the word regardless, with an added superfluous ir added at the start. All you have to do is think about it logically to see that its not a grammatically correct word, just a mistake that unfortunetly became popular. You dont have to be a pompous or rude asshole to correct someone, just somebody who thinks its important that they dont compromise the English language to cater for people who cant be arsed to do their English homework.
To be honest, I dont mind people using words like this in normal speech, but I cant stand to see it in print. People like journalists and authors, I believe, have a responsibility to be at least somewhat gramatically correct.

[Jessica]

For those who are language challenged and obtuse, irregardless means really, really, regardless.

[Little_Girl]

According to certain actual, credible dictionaries (which I cannot name because of potential legal issues), irregardless evolved in the early 20th Century United States from the word regardless. Frequently those who engage in hypercorrection (yes, that is a word, look it up) say that there is no such word. However, this is misleading and ignores both the inevitable evolution of the English language as well as the authoritative comments of most English dictionaries, which do in fact recognize it as a valid colloquialism. (Most do so whilst still observing that most people do not consider it proper in formal English).
The argument that the word contains a double negative and and is therefore improper ignores countless other commonly used words which do the very same thing; e.g., debone, unravel. A similar argument could also be made for the seemingly nonsensical yet true proposition that flammable and inflammable mean the same thing.
It also fails to take into consideration that even standardized, proper English has very few firm rules, that most rules of proper English have many exceptions, and that formal vocabulary, grammar, spelling, etc. vary from place to place. (Colour/color; quotes/quotes; punctuation inside quotes,/punctuation outside quotes, possessives apostrophe/its lack of apostrophe, while/whilst, and the like.)
Of course, this does not excuse the complete and utter abuse of English by many people today; e.g. u for you, ur for your/youre, i for I, wat for what, etc. However, irregardless does not fall into this blatantly vulgar category.