To put at risk or to place something in a dangerous or uncertain situation.
From the prefix 'en-' combined with 'hazard,' which came from Arabic 'az-zahr' (dice game). The word originally meant to stake something on a game of chance, then evolved to mean any risky venture.
In Shakespeare's time, 'enhazard' was the word for betting everything on one throw of the dice—it captured that thrilling moment of putting it all on the line, which is why it appears in literature about brave (or foolish) decisions.
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