noun
bold as a lion
A classical set phrase meaning extremely bold or fearless. Rare in modern Japanese; mainly encountered in literary or historical contexts.
彼の決断はまさに胆斗の如しだったと、古い軍記物に記されている。
His decision was truly as bold as a lion, as recorded in an old war chronicle.
Common modern word for 'bold' or 'daring'; 胆斗の如し is a rare classical equivalent.
A classical Japanese phrase; the exact origin is uncertain, but it uses 胆 (gallbladder/courage) and 斗 (a measure) in a simile meaning 'like a large measure of courage'.