(in blackjack) double a bet after seeing one’s initial cards, with the requirement that one additional card be drawn.
the amount only increases when you choose to split or double down
he doubled down on a pair and lost
Example sentences
变本加厉地坚持；在被质疑/批评后反而更加坚持自己的做法或立场。
1.1Strengthen one’s commitment to a particular strategy or course of action, typically one that is potentially risky.
he decided to double down and escalate the war
the third quarter of the year saw central banks doubling down on the quantitative easing approach