"Intellectual" is a word in ENGLISH

The intellect or understanding; mental powers or
faculties.

Suitable for exercising the intellect; formed by, and
existing for, the intellect alone; perceived by the intellect; as,
intellectual employments.

Relating to the understanding; treating of the mind;
as, intellectual philosophy, sometimes called \"mental\" philosophy.

Endowed with intellect; having the power of
understanding; having capacity for the higher forms of knowledge or
thought; characterized by intelligence or mental capacity; as, an
intellectual person.

Belonging to, or performed by, the intellect; mental;
as, intellectual powers, activities, etc.