histrionic

As a noun poseur

is one who affects some behaviour, style, attitude or other condition, often to impress or influence others.

As an adjective histrionic is

of, or relating to actors or acting.

As adjectives the difference between histrionic and hysterical

is that histrionic is of, or relating to actors or acting while hysterical is of, or arising from hysteria.

As adjectives the difference between histrionic and hysteric

is that histrionic is histrionic while hysteric is hysterical.

As a noun hysteric is

a hysterical person.

As adjectives the difference between histrionic and neurotic

is that histrionic is of, or relating to actors or acting while neurotic is affected with a neurosis.

As a noun neurotic is

a person who has a neurosis.

As a noun melodrama

is a kind of drama having a musical accompaniment to intensify the effect of certain scenes.

As an adjective histrionic is

of, or relating to actors or acting.

As adjectives the difference between historical and histrionic

is that historical is pertaining to the history, to what happened in the past while histrionic is of, or relating to actors or acting.

As a noun historical

is a historical romance.

As adjectives the difference between historic and histrionic

is that historic is having importance or significance in history while histrionic is of, or relating to actors or acting.

As adjectives the difference between histrionic and ostentatious

is that histrionic is histrionic while ostentatious is of ostentation.

As adjectives the difference between histrionic and affected

is that histrionic is histrionic while affected is influenced or changed by something.

As a noun affected is

someone , as by a disease.

As a verb affected is

(affect).

As adjectives the difference between histrionic and narcissistic

is that histrionic is of, or relating to actors or acting while narcissistic is having an inflated idea of one's own importance.

As a noun narcissistic is

a narcissist.