虚きょ言げん症しょう

noun

mythomania; pathological lying

A clinical term for compulsive lying or a strong propensity to lie, often used in psychiatric contexts. The cross-referenced term 虚言癖 is more common in everyday language.

See also: 虚言癖

• 虚きょ言げん症しょうの患かん者じゃは、自じ分ぶんでも気きづかないうちに嘘うそをついてしまうことがある。

  Patients with mythomania may tell lies without even realizing it themselves.

• 彼かれの話はなしはあまりにも誇こ張ちょうされていて、虚きょ言げん症しょうを疑うたがわれた。

  His stories were so exaggerated that people suspected he had mythomania.