heroic

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

• “an epic voyage”
• “of heroic proportions”
• “heroic sculpture”

relating to or characteristic of heroes of antiquity

• “heroic legends”
• “the heroic age”

having or displaying qualities appropriate for heroes

• “the heroic attack on the beaches of Normandy”
• “heroic explorers”

impressive in size or scope

• “heroic undertakings”

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

• “made a last desperate attempt to reach the climber”
• “the desperate gallantry of our naval task forces marked the turning point in the Pacific war” G.C.Marshall
• “they took heroic measures to save his life”

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