Certain sets of words in the English language tend to confuse writers. I have found the following to be among them:
REGARDLESS / IRREGARDLESS
The proper form of this mercurial word, whether used as an adjective, adverb, or preposition with of, is regardless. The word irregardless, often used in its stead, is considered nonstandard.
Incorrect: We plan to go ahead with the outdoor barbecue irregardless of the weather.
Correct: We plan to go ahead with the outdoor barbecue regardless of the weather.
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