To twist or bend something out of its normal or natural shape, often in an extreme or painful way.
From Latin 'contortus,' past participle of 'contorquere' (to twist together), from 'con-' (together) and 'torquere' (to twist).
When people lie, their facial expressions often contort in micro-expressions lasting fractions of a second—even expert liars can't fully control these tiny muscle twitches, which is why security experts study them.
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