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laborious

audio pronunciation audio pronunciation
adjective
  • needing much effort [Barron]

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