Open English Wordnet
Nouns
Adjectives
(a)incompetent, unqualifiedlegally not qualified or sufficient“a wife is usually considered unqualified to testify against her husband”, “incompetent witnesses”
(a)incompetentnot qualified or suited for a purpose“an incompetent secret service”, “the filming was hopelessly incompetent”
(s)bungling, clumsy, fumbling, incompetentshowing lack of skill or aptitude“a bungling workman”, “did a clumsy job”, “his fumbling attempt to put up a shelf”