The Collaborative International Dictionary of English v.0.48:

Grievous \Griev"ous\, a. [OF. grevous, grevos, LL. gravosus. See
   Grief.]
   1. Causing grief or sorrow; painful; afflictive; hard to
      bear; offensive; harmful.
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            The famine was grievous in the land.  --Gen. xii.
                                                  10.
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            The thing was very grievous in Abraham's sight.
                                                  --Gen. xxi.
                                                  11.
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   2. Characterized by great atrocity; heinous; aggravated;
      flagitious; as, a grievous sin. --Gen. xviii. 20.
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   3. Full of, or expressing, grief; showing great sorrow or
      affliction; as, a grievous cry. -- Griev"ous*ly, adv. --
      Griev"ous*ness, n.
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