unteach's Usage Examples:

But the spirit and the movements were those inimitable and unteachable Russian ones that "Uncle" had expected of her.

The city is the seat of the Academy of the Holy Names (opened in 1865 as St Peter's Academy), of the State Custodial Asylum for unteachable idiots, of the Central New York Institution for Deaf Mutes (1875), and of the Oneida County Home.

The Azhar students not seldom enter government offices and even hold important administrative posts, but they never lose the stamp of their education - the narrow, unteachable spirit, incapable of progress, always lost in external details, and never able to grasp principles and get behind forms to the substance of a matter.

Synonyms:

teach, learn, instruct,

Antonyms:

remember,