Noah Webster's Dictionary 1. (a.) Not competent; incapable; unable; inadequate; unfit; wanting in adequate strength, power, capacity, means, qualifications, or the like. 2. (a.) Wanting the legal or constitutional qualifications; inadmissible; as, a person professedly wanting in religious belief is an incompetent witness in a court of law or equity; incompetent evidence. 3. (a.) Not lying within one's competency, capacity, or authorized power; not permissible.

Multi-Version Concordance Incompetent (1 Occurrence) 1 Corinthians 6:2 Don't you know that the saints will judge the world? And if the world is judged by you, are you unworthy to judge the smallest matters? (See RSV)