2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Betray  \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. 
 
  From  WordNet  r  1.6  [wn]: 
 
  betray 
  v  1:  reveal  unintentionally;  "Her  smile  betrayed  her  true 
  feelings"  [syn:  {bewray}] 
  2:  deliver  to  an  enemy  by  treachery;  "Judas  sold  Jesus";  "The 
  spy  betrayed  his  country"  [syn:  {sell}] 
  3:  disappoint,  prove  undependable  to  abandon,  forsake;  "His 
  sense  of  smell  failed  him  this  time";  "His  strength 
  finally  failed  him";  "His  children  failed  him  in  the 
  crisis"  [syn:  {fail}] 
  4:  be  sexually  unfaithful  to  one's  partner  in  marriage;  "She 
  cheats  on  her  husband";  "Might  her  husband  be  wandering?" 
  [syn:  {cheat  on},  {cheat},  {cuckold},  {wander}] 
  5:  give  away  information  about  somebody;  "He  told  on  his 
  classmate  who  had  cheated  on  the  exam"  [syn:  {denounce},  {tell 
  on},  {give  away},  {rat},  {grass},  {peach},  {shit},  {shop}, 
  {snitch},  {stag}] 
  6:  cause  someone  to  believe  an  untruth;  "The  insurance  company 
  deceived  me  when  they  told  me  they  were  covering  my  house" 
  [syn:  {deceive},  {lead  astray}]  [ant:  {undeceive}] 

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