To trick someone or deceive them into believing something that is false.
From Latin 'deludere,' from 'de-' (away, thoroughly) plus 'ludere' (to play or mock). The root 'ludere' also gives us 'ludicrous' and 'illusion,' all about playing tricks.
The Latin word 'ludere' means 'to play,' so when you delude someone, you're literally 'playing them for a fool'—it's the same root in 'ludicrous,' which is why being tricked feels ridiculous!
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