Synonyms and related words :
NG, cheap, featherweight, forceless, good-for-naught, good-for-nothing, impotent, ineffective, ineffectual, inefficacious, junk, junky, lightweight, no-good, not worth having, not worth mentioning, not worthwhile, nugacious, nugatory, of no account, powerless, shabby, shoddy, trashy, trivial, unauthoritative, valueless, weak, without any weight, worthless