как бы то ни было(Regardless, somewhere out there, he got himself into trouble. Travel in any direction from Carey Lake would have been slow, difficult, and dangerous. Did Campbell surprise a bear, fall into a beaver pond, or get caught in a freak snowstorm? No one knows. (anomalien.com)ART Vancouver)
irregardless(Merriam-Webster: "irregardless" was popularized in dialectal American speech in the early 20th century; it is still used primarily in speech, although it can be found from time to time in edited prose. Its reputation has not risen over the years, and it is still a long way from general acceptance. Use "regardless" instead) e.g., I told them that irregardless of what you read in books, they's some members of the theatrical profession that occasionally visits the place where they sleep. (Ring Lardner, The Big Town, 1921 'More)