Regardless or irregardless: which is correct?

Standard form
regardless
Non-standard
irregardless
Summary

Standard form: regardless — Non-standard: irregardless. Regardless = without paying attention to the present situation, despite everything; regardless of = without regard to.

Part of speech
adverb
Source
Merriam-Webster

Why

Merriam-Webster enters irregardless as nonstandard — a blend of irrespective and regardless whose ir- prefix adds a second negative that means nothing; Oxford gives it the same status. Use regardless in all edited writing.

Examples

  • We will go ahead regardless of the weather.
  • Regardless of the cost, safety comes first.

Wrong → right

✗ Non-standard
We will go ahead irregardless of the weather.
✓ Standard form
We will go ahead regardless of the weather.
✗ Non-standard
Irregardless of the cost, safety comes first.
✓ Standard form
Regardless of the cost, safety comes first.
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Checked against
Merriam-Webster / Oxford
Spelling authority
Merriam-Webster · Oxford English Dictionary / Oxford spelling · SCOWL
Commonly confused and non-standard forms
64
Dictionary
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Commonly confused words

Commonly confused words are pairs or groups that sound or look alike but differ in meaning or grammar, such as affect and effect, its and it’s, or principal and principle. Each entry here explains the difference in plain words, shows it in two example sentences and names the convention it follows: Merriam-Webster for American English, Oxford for British English. Spelling variants such as colour and color are marked as correct in their own variety, not as errors.

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