English Dictionary

double down

verb

(gambling) To double one's wager. In particular, it is the name of a specific doubling bet allowed in blackjack.

He decided to double down on his bet at the blackjack table.

意味（1）

(gambling) To double one's wager. In particular, it is the name of a specific doubling bet allowed in blackjack.

He'd bet three thousand and double down to six thousand, all of it hanging on the turn of the next card.

意味（2）

(figuratively, by extension, intransitive, or transitive with on) To significantly increase a risk, investment, or other commitment; to respond to a challenge (e.g. to an opinion) by reinforcing or extending one's position rather than moderating it.

Hillary Clinton, John Edwards and Barack Obama all want to get out of Iraq. They all want to double down in Afghanistan.