Meaning: something that can easily be broken or crumble by itself
Example: The police brought the illegal business down like a house of cards as per the news article but it was a much more planned affair in reality. Read on
put cards on the table Meaning: be open and honest; reveal one's position or intentions. Example: Shawn thought it was time to put his cards on the table ... Read on
keep card close to chest Meaning: be secretive or cautious, give nothing away. Example: My brother don't know how much money his friends will spend this Friday night, ... Read on
Meaning: to have a secret advantage that is suddenly revealed to change the game
Example: He did not just leave his house. He had a card up his sleeve that he did not even reveal to his family, which was his new flat in a posh locality. Read on
on the cards Meaning: likely to happen. Example: Some big changes in the British Space Agency structure are on the cards for next year.