Nutjob

Part of speech: noun

Definitions

1. A person exhibiting eccentric behavior or extreme irrationality | An individual considered mentally unstable or engaging in bizarre actions | Someone whose thoughts or actions are deemed wildly unreasonable or crazy
2. An individual who displays erratic conduct or unpredictably irrational thoughts
3. A person characterized by peculiar behavior and often viewed as mentally unstable or illogical

Etymology: The term emerged in American English slang around the mid-20th century, combining the everyday word for a hard-shelled fruit with a colloquial intensifier. "Nut" had long been used metaphorically to refer to the head or brain, which led to its figurative use for mental faculties or eccentricity. This laid the groundwork for its role in informal expressions related to mental state. The second element, "job," is often added in English slang to emphasize a person characterized by some defining trait, usually in a somewhat dismissive or humorous way. This construction follows a pattern seen in other terms like "deadbeat" or "workaholic," where the suffix highlights a person's behavior or condition. Together, this coined compound came to describe someone perceived as mentally unstable, eccentric, or simply "crazy" in a jocular or derogatory fashion. The phrase captures a snapshot of mid-20th-century American informal speech, reflecting a casual, sometimes irreverent attitude toward mental health and personality quirks. Over time, the word has maintained its informal status, often used to describe people with unusual or erratic behavior without clinical implications. Its origins in combining a playful metaphor for the brain with a blunt suffix make it a vivid example of how English slang can create colorful, memorable terms from everyday words.

Synonyms: crazy person, weirdo