"Unskill" is a word in ENGLISH

Wanting art, knowledge, or skill; ignorant; unskillful.

Wanting dexterity in the use of the hands, or of instruments; not dexterous; without skill; clumsy; wanting ease, grace, or …

Without skill or grace; wanting dexterity, nimbleness, or readiness; stiff; awkward, as if benumbed; unwieldy; unhandy; hence; ill-made, misshapen, or …

Depending upon experience or observation alone, without due regard to science and theory; -- said especially of medical practice, remedies, …

Lat. Unskillfulness; want of skill

Want of expertness or skill.

Want of power or skill; inability; incapacity; incompetency; as, the insufficiency of a man for an office.

Wanting in strength, power, ability, capacity, or skill; incompetent; incapable; unfit; as, a person insufficient to discharge the duties of …

The quality or state of being perfect or complete, so that nothing requisite is wanting; entire development; consummate culture, skill, …

The son of Helios (Phoebus), that is, the son of light, or of the sun. He is fabled to have …

Wanting skill.