膽大妄為

daring / presumptuous / daredevil

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

daring / bold / audacious

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

absurd / fantastic / presumptuous / rash

to take rash action

as (in the capacity of) / to take sth as / to act as / to serve as / to behave as / to become / to be / to do / by (in the passive voice)

because of / for / to