PERPLEXED - [adjective] to be confused or embarassed by something difficult to understand or believe
Examples of use
They looked perplexed and kindly asked him to repeat everything he said.
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Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
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