the.com/doubler

Betting twice as much because once was clearly a rookie mistake.

means A gambler's move of doubling the size of a bet, often to chase back an earlier loss.

from Straightforward agent-noun formation: 'double' (from Latin duplus, 'twofold,' via Old French duble) plus the '-er' that turns an action into someone who does it. No hidden story here — the word just does what it says, twice.

origin
craps and backgammon strategy term, centuries old
martingale link
classic doubling system to chase losses back to zero
flaw
table limits and finite bankrolls always win eventually
backgammon use
doubling cube can raise stakes up to 64x
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