heroic

Of behavior that is impressive and ambitious in scale or scope.

“heroic undertakings”

Showing extreme courage; especially of actions courageously undertaken in desperation as a last resort.

“they took heroic measures to save his life”

Having or displaying qualities appropriate for heroes.

“the heroic attack on the beaches of Normandy”

“heroic explorers”

Very imposing or impressive; surpassing the ordinary (especially in size or scale).

“of heroic proportions”

“heroic sculpture”

A verse form suited to the treatment of heroic or elevated themes; dactylic hexameter or iambic pentameter.

Relating to or characteristic of heroes of antiquity.

“heroic legends”

“the heroic age”