Meaning of laborious

la•bo•ri•ous

Pronunciation: (lu-bôr'ē-us, -bōr'-), [key]
— adj.
  1. requiring much work, exertion, or perseverance: a laborious undertaking.
  2. characterized by or requiring extreme care and much attention to detail: laborious research.
  3. characterized by or exhibiting excessive effort, dullness, and lack of spontaneity; labored: a strained, laborious plot.
  4. given to or diligent in work: a careful, laborious craftsman.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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