胆たん気きたんきMeanings1nouncourage; guts; nerves of steelA somewhat literary or formal word for boldness and fearless spirit. Often used in contexts requiring mental fortitude.彼かれは胆たん気きのある男おとこだ。He is a man of courage.その決けつ断だんには胆たん気きが必ひつ要ようだった。That decision required nerves of steel.