heroic

"Always strive to perform heroic acts, no matter how small they may seem"

"My dad did a heroic thing when he fixed our broken fence before the storm came"

"Her heroic sacrifice brought tears to my eyes and filled me with profound gratitude"

"Was his heroic rescue of the kitten from the tree the most amazing thing you've ever seen?"

"The firefighter made a heroic effort to save everyone in the burning building"