Ne'er do well is a person or thing that is no good, that is not capable or not willing to do what is expected or proper.
(noun)An example of a ne'er do well is a guy who just won't get a job or do anything productive with his life.
See ne'er-do-well in Webster's New World College Dictionary
noun
adjective
See ne'er-do-well in American Heritage Dictionary 4
noun
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