\Be*tray"\ (b[-e]*tr[=a]"), v. t. [imp. & p. p.
{Betrayed} (-tr[=a]d"); p. pr. & vb. n. {Betraying}.] [OE.
betraien, bitraien; pref. be- + OF. tra["i]r to betray, F.
trahir, fr. L. tradere. See {Traitor}.]
1. To deliver into the hands of an enemy by treachery or
   fraud, in violation of trust; to give up treacherously or
   faithlessly; as, an officer betrayed the city.
         Jesus said unto them, The Son of man shall be
         betrayed into the hands of men.       --Matt. xvii.
                                               22.
2. To prove faithless or treacherous to, as to a trust or one
   who trusts; to be false to; to deceive; as, to betray a
   person or a cause.
         But when I rise, I shall find my legs betraying me.
                                               --Johnson.
3. To violate the confidence of, by disclosing a secret, or
   that which one is bound in honor not to make known.
         Willing to serve or betray any government for hire.
                                               --Macaulay.
4. To disclose or discover, as something which prudence would
   conceal; to reveal unintentionally.
         Be swift to hear, but cautious of your tongue, lest
         you betray your ignorance.            --T. Watts.
5. To mislead; to expose to inconvenience not foreseen to
   lead into error or sin.
         Genius . . . often betrays itself into great errors.
                                               --T. Watts.
6. To lead astray, as a maiden; to seduce (as under promise
   of marriage) and then abandon.
7. To show or to indicate; -- said of what is not obvious at
   first, or would otherwise be concealed.
         All the names in the country betray great antiquity.
                                               --Bryant.