sly
UK[slaɪ]US[slaɪ]
adj
clever at deceiving people in a way that is often considered dishonest or cunning.
adj
(of an action, remark, etc.) showing that you are aware of a secret or something that is not obvious.
Etymology
the adjective 'sly' entered english from old norse 'slǽgr', meaning 'cunning, crafty, or sly'. this norse term is related to the old english word 'slēan', meaning 'to strike', suggesting a conceptual link between physical dexterity and mental cleverness. over time, the meaning shifted from a potentially positive sense of skillful ingenuity to one more associated with deceit and stealthy cunning. its evolution reflects a common semantic path where a word for physical skill acquires connotations of cleverness and, eventually, of trickery.
Analysis
the word 'sly' is a simplex word of old norse origin. it does not break down into smaller, meaningful morphemes within modern english spelling.
Examples
he's a sly old fox who always gets what he wants.
she gave me a sly wink to signal she was joking.
the advertisement was a sly attempt to manipulate public opinion.