胆

gall bladder / courage / guts / gall / inner container (e.g. bladder of a football, inner container of a thermos)

dawn / morning / daybreak / day / dan, female roles in Chinese opera (traditionally played by specialized male actors)

moon / month / monthly / CL:個|个[ge4],輪|轮[lun2]

brazen / audacious / outrageous / bold / daring / fearless

to get one’s courage up / to embolden

lit. heart alarmed, trembling in fear (idiom); prostrate with fear / scared witless

lit. to sleep on brushwood and taste gall (like King Gou Jian of Yue 勾踐|勾践[Gou1 Jian4]), in order to recall one's humiliations) (idiom) / fig. to maintain one's resolve for revenge

lit. to lie on firewood and taste gall (idiom); fig. suffering patiently, but firmly resolved on revenge

see 心驚膽戰|心惊胆战[xin1 jing1 dan3 zhan4]

courage

to proceed with sth even though scared / to put on a brave face

solitary hero / maverick

solitary hero / maverick

to be scared out of one's wits (idiom)

frightening / frightened (idiom)

to proceed with sth even though scared; to put on a brave face

devoid of fear (idiom) / intrepid

acetylcholine ACh (amine related to vitamin B complex)

to pour out one's heart (idiom)

to be completely honest and sincere (idiom)

to eat bear heart and leopard gall (idiom) / to pluck up some courage

panic-stricken / scared out of one's wits

to be scared out of one's wits / to scare stiff