smart-aleck
UK[ˈsmɑːt ˌælɪk]US[ˈsmɑːrt ˌælɪk]
n
a person who tries to seem clever by making annoying remarks, answering questions rudely, etc.
adj
characteristic of or like a smart aleck
Morpheme Breakdown
smart
aleck
smart
clever
aleck
personal name
Etymology
The term 'smart-aleck' is an Americanism from the mid-19th century, combining the adjective 'smart' in its colloquial sense of "clever, witty, or impertinent" with the common personal name 'Aleck,' a diminutive of Alexander. It follows a familiar pattern in English for creating derogatory terms for a type of person by attaching a descriptive word to a generic name, such as 'wise guy' or 'silly billy.' The logic hinges on labeling someone not as genuinely intelligent, but as a specific, annoyingly cocky individual—an 'Aleck' who is 'smart' in an irritating way. This construction effectively personifies the abstract quality of obnoxious cleverness.
Analysis
Structure: smart (clever) + aleck (personal name)
smart: From Middle English smerte, smart, from Old English smeart ("painful, severe, stinging"), from Proto-Germanic. In this compound, it carries the sense of "clever, witty, quick."
aleck: A diminutive form of the personal name Alexander, used here as a generic placeholder name for a person, similar to "Tom, Dick, or Harry."
Examples
He was tired of being corrected by the smart-aleck in the back row.
She gave a smart-aleck answer that got her sent to the principal's office.
Don't be such a smart-aleck; just answer the question directly.