What does dauntless mean?

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From our dictionary:

daunt•less

Pronunciation: (dônt'lis, dänt'-), [key]
adj.
not to be daunted or intimidated; fearless; intrepid; bold: a dauntless hero.

n.
(cap.) Also called Douglas SBD. the principal U.S. Navy fleet bomber of early World War II, capable of carrying bombs or depth charges and particularly successful as a dive bomber.