sneaky
Meaning
behaving in a secret and sometimes dishonest or unpleasant way
done or achieved in a secret and sometimes dishonest or unpleasant way
Structure
Usage
that was a sneaky trick to play on your brother.
she took a sneaky look at her notes during the test.
he has a sneaky feeling that he's being watched.
Etymology
The adjective 'sneaky' is a relatively modern formation built upon the older verb 'sneak'. The verb 'sneak' itself has obscure origins, likely emerging in the 16th century from a dialectal base related to Old English and Old Norse words for creeping or crawling. The core semantic thread is one of stealthy, furtive, or slinking movement. By adding the productive English suffix '-y', which forms adjectives meaning 'having the quality of', the word 'sneaky' was created to describe a person or action characterized by such secretive and often deceitful behavior. This evolution captures a shift from a literal description of physical movement to an abstract characterization of underhanded conduct.
Analysis
sneak (from middle english sniken, of old english or old norse origin, meaning 'to creep, crawl') + y (english adjectival suffix, meaning 'characterized by; full of').