People who deceive and cheat others out of money or valuables through fraud or trickery.
From 'swindle' which came from German 'Schwindler' (cheater, fraud), derived from 'schwindeln' (to dizzy or deceive). The '-er' suffix makes it refer to the person doing the swindling.
Interestingly, 'swindle' entered English from German immigrants in 18th century America—it became especially associated with financial cons, and the word eventually made its way back to influence German-speaking areas, showing how languages trade words across cultures.
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