胆 - gall bladder, courage, pluck

gallstone

ulterior motive; plot; scheme

discouragement; despondency; dejection; disappointment

bold; daring; audacious

courage; guts; nerves of steel

going through thick and thin to attain one's objective; enduring unspeakable hardships for the sake of vengeance

gallbladder; gall bladder

bile; gall

being bold and courageous, but also careful and meticulous

bold and clever; daring and ingenious; audacious and masterly

bold and unrestrained; daring and unfettered

to make a person's blood run cold