madcap
adjective [ before noun ] old-fashioned uk/ˈmæd.kæp/ us/ˈmæd.kæp/
（行为或计划）鲁莽的，愚蠢的，荒唐的
used to describe silly and funny behaviour or a plan that is very silly and funny and unlikely to succeed
the madcap antics of the clowns 小丑们愚蠢可笑的动作