Antonyms for competence

ability:

inadequacy, incompetence, inability, incapability, ineptness, ignorance, impotence, lack, inappropriateness.

attribute:

incompetence.

noun:

impairment, ineffectualness, Incapacitation, defectiveness, paralysis, inadequateness, inefficacy, disability, ineffectiveness, incapableness, debilitation, helplessness, deficiency, inefficaciousness, weakness, ineffectuality, ineptness, disablement, uselessness.