An irrational, or abnormal fixation or preoccupation; an obsession.
Sexual attraction to or arousal at something abnormally sexual or nonsexual, such as an object or a nonsexual part of the body.
Something which is believed to possess, contain, or cause spiritual or magical powers; an amulet or a talisman.
A behavior or way of thinking that is characteristic of a person.
A peculiar individual reaction to a generally innocuous substance or factor.
A peculiarity that serves to distinguish or identify.
A language or behaviour that is particular to an individual or group.