Peter Pan syndrome

Proper noun

 * 1)  The supposed psychological phenomenon of immaturity among some men, who, like the fictional character, remain childish or childlike and fail to assume appropriate adult social roles and responsibilities.

Usage notes

 * Popularized by Dr. Dan Kiley, in The Peter Pan Syndrome: Men Who Have Never Grown Up (1983), but earlier usages, with varied senses, exist. Examples:

Translations

 * French:
 * Hungarian: Pán Péter szindróma
 * Italian: sindrome di Peter Pan
 * Japanese: ピーターパン症候群
 * Polish: syndrom Piotrusia Pana, kompleks Piotrusia Pana
 * Portuguese: síndrome de Peter Pan
 * Spanish: síndrome de Peter Pan