expression, ichidan verb
muster one's courage; resolve oneself; steel oneself
Rare expression meaning to gather one's courage or make a firm resolution, often in the face of difficulty. Similar to 覚悟を決める but less common.
See also: 覚悟を決める
彼は度胸を据えて、上司に反論した。
He mustered his courage and talked back to his boss.
Before the important match, the player steeled himself and faced it.