alienist

As nouns the difference between alienist and alchemist

is that alienist is (obsolete) an expert in mental illness, especially with reference to legal ramifications while alchemist is alchemist (one who practices alchemy).

As nouns the difference between alienist and psychoanalyst

is that alienist is (obsolete) an expert in mental illness, especially with reference to legal ramifications while psychoanalyst is a practitioner of psychoanalysis.

As nouns the difference between alien and alienist

is that alien is a person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration while alienist is an expert in mental illness, especially with reference to legal ramifications.

As an adjective alien

is pertaining to an alien.

As a verb alien

is to estrange; to alienate.

As a verb librarian

is .

As a noun alienist is

(obsolete) an expert in mental illness, especially with reference to legal ramifications.