the mind > mental capacity > knowledge > want of knowledge, ignorance > intellectual ignorance > deprive of enlightenment [verb (transitive)] (5)
To cast into darkness or shadow; to cloud, obscure. transitive. In figurative contexts.
transitive. To deprive (the mind, understanding, etc.) of intellectual or spiritual awareness; to impair or diminish (the understanding); to deprive…
To involve in intellectual or moral darkness, in the ‘night’ of error or superstition.
figurative. To compress or narrow (the mind, faculties, etc.) by preventing their free growth.