Dictionary
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.