Verb
-
cause someone to believe an untruth
"The insurance company deceived me when they told me they were covering my house"
- lead astray -
give away information about somebody
"He told on his classmate who had cheated on the exam"
- tell on - give away -
be sexually unfaithful to one's partner in marriage
"She cheats on her husband"
"Might her husband be wandering?"
- cheat on -
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"
-
deliver to an enemy by treachery
"Judas sold Jesus"
"The spy betrayed his country"
-
reveal unintentionally
"Her smile betrayed her true feelings"