The Collaborative International Dictionary of English v.0.48:

Grieve \Grieve\ (gr[=e]v), v. t. [imp. & p. p. Grieved; p. pr.
   & vb. n. Grieving.] [OE. greven, OF. grever, fr. L. gravare
   to burden, oppress, fr. gravis heavy. See Grief.]
   1. To occasion grief to; to wound the sensibilities of; to
      make sorrowful; to cause to suffer; to afflict; to hurt;
      to try.
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            Grieve not the Holy Spirit of God.    --Eph. iv. 30.
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            The maidens grieved themselves at my concern.
                                                  --Cowper,
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   2. To sorrow over; as, to grieve one's fate. [R.]
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The Collaborative International Dictionary of English v.0.48:

Grieve \Grieve\ (gr[=e]v), Greeve \Greeve\, n. [AS. ger[=e]fa.
   Cf. Reeve an officer.]
   A manager of a farm, or overseer of any work; a reeve; a
   manorial bailiff. [Scot.]
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         Their children were horsewhipped by the grieve. --Sir
                                                  W. Scott.
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The Collaborative International Dictionary of English v.0.48:

Grieve \Grieve\, v. i.
   To feel grief; to be in pain of mind on account of an evil;
   to sorrow; to mourn; -- often followed by at, for, or over.
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         Do not you grieve at this.               --Shak.
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WordNet (r) 3.0 (2006):

grieve
    v 1: feel grief [syn: grieve, sorrow]
    2: cause to feel sorrow; "his behavior grieves his mother" [syn:
       grieve, aggrieve]