stab (someone) in the back

to do something harmful to someone who trusted you.

He had been lied to, stabbed in the back, by people he thought were his friends.

• last hurrah
• last minute
• last of the big spenders
• last straw
• last word in
• last word in something
• latchkey child
• latchkey kid
• latch onto
• latch onto someone
• latch onto something
• late in the day
• laugh all the way to the bank
• laugh a minute
• laugh at
• laugh at someone
• laugh at something
• laugh in face
• laughing stock
• laugh in someone's face
• laugh like a drain
• laugh off
• laugh off something
• laugh out of court
• laugh someone out of court