betray (
http://definr.com/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]