very brave or great

a heroic act/deed 英勇的行为／英雄事迹

If you make a heroic attempt or effort to do something, you try very hard to do it.

Despite Roz's heroic efforts to liven it up, the party was a disaster. 尽管罗兹费了很大力气来活跃气氛，这次聚会还是很糟。