give (someone/something) away

to tell or show something that is private or secret.

She didn't want us to know she was upset, but the look on her face gave her away.

I haven't seen the movie yet, so don't give away the ending.

Usage notes: said about something you do whether or not you intend to do it

• get away with something
• Get away with you!
• get a word in edgeways
• get a word in edgewise
• get back on track
• get back up
• get bearings
• get behind
• get behind someone
• get behind something
• get behind the wheel
• get bent out of shape
• get beyond a joke
• get blood from a stone
• get blood out of a stone
• get brain in gear
• get brownie points
• get carte blanche
• get caught up in
• get caught up in something
• get claws into
• get claws into someone
• get cold feet
• get comeuppance
• get cracking