The Collaborative International Dictionary of English v.0.48:

Soothe \Soothe\ (s[=oo][th]), v. t. [imp. & p. p. Soothed; p.
   pr. & vb. n. Soothing.] [Originally, to assent to as true;
   OE. so[eth]ien to verify, AS. ges[=o][eth]ian to prove the
   truth of, to bear witness. See Sooth, a.]
   1. To assent to as true. [Obs.] --Testament of Love.
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   2. To assent to; to comply with; to gratify; to humor by
      compliance; to please with blandishments or soft words; to
      flatter.
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            Good, my lord, soothe him, let him take the fellow.
                                                  --Shak.
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            I've tried the force of every reason on him,
            Soothed and caressed, been angry, soothed again.
                                                  --Addison.
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   3. To assuage; to mollify; to calm; to comfort; as, to soothe
      a crying child; to soothe one's sorrows.
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            Music hath charms to soothe the savage breast,
            To soften rocks, or bend a knotted oak. --Congreve.
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            Though the sound of Fame
            May for a moment soothe, it can not slake
            The fever of vain longing.            --Byron.
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   Syn: To soften; assuage; allay; compose; mollify;
        tranquilize; pacify; mitigate.
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