A person who cheats, swindles, or acts dishonestly; someone who uses chisels (the tool).
From chisel (the tool) plus -er suffix. The figurative meaning of 'cheater' comes from the metaphorical sense of 'chiseling away' at someone's money or trust through small, persistent deceits.
Chiseler is slang that beautifully captures deception—like how a chisel gradually removes tiny bits of stone, a chiseler gradually removes tiny bits of your trust or money through small dishonest acts!
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