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perturb

audio pronunciation audio pronunciation
verb
  • make (sb) very worried; disturb [Barron]
  • to disturb greatly in mind; disquiet [Taisha]

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Wiktionary:
perturb @ wiktionary
WordNet:
perturb @ wordnet.princeton.edu
Merriam-Webster Online:
perturb @ M-W.com
MSN Encarta:
perturb @ Encarta
American Heritage Dictionary of the English Language:
perturb @ AHD provided by Yahoo! Education
Answers.com:
perturb @ Answers.com
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