the world > action or operation > harm or detriment > disadvantage > uselessness > [noun] > that which is useless > useless person or thing > thing or object (6)
A person who is of no use or help to others, esp. one who is lazy, feckless, and unreliable. Formerly also: †a useless thing (obsolete).
An idler, shirker; applied as a term of abuse to an ineffectual or obstructive person, object, etc. Also attributive in sooner dog.