Antonyms for handiness

ability:

stupidity, weakness, inanity, inadequacy, inability, incompetence, ignorance, clumsiness.

convenience:

inutility, uselessness, unsuitability, inexpedience, inconvenience, waste.

dexterity:

awkwardness, ineptness.

knack:

want, ineptitude, lack.

readiness:

discouragement, unpreparedness.

skill:

inexperience, incapability, incapacity.

noun:

inaccessibility, unavailability.