To fluster someone is to make them feel upset or agitated. There are many things that might fluster you: giving a speech in front of the whole school, solving a challenging math problem, or even getting a love note from an admirer.

If your coworker is about to give the biggest presentation of his life, you’ll probably only fluster, or upset, him if you point out that his socks don’t match. Use the adjective form, flustered, to describe someone when they’re feeling this way. Most of us get flustered once in a while, but if you’re “easily flustered,” it happens to you quite often. Don’t worry, though; that just gives you more opportunities to practice using this vocabulary word.

Definitions of fluster
  1. verb
    cause to be nervous or upset
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    type of:
    confuse, disconcert, flurry, put off
    cause to feel embarrassment
  2. verb
    be flustered; behave in a confused manner
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    type of:
    acquit, bear, behave, carry, comport, conduct, deport
    behave in a certain manner
  3. noun
    a disposition that is confused or nervous and upset
    synonyms: perturbation
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    type of:
    a temperament that is perturbed and lacking in composure
Word Family

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