madcap (n.)
- adventurer
- adventuress
- ardent
- banana
- beast
- beldam
- berserk
- berserker
- bold
- bomber
- brute
- caricaturist
- clown
- comedian
- comic
- daredevil
- daring
- demon
- devil
- dragon
- fanatic
- fiend
- fire-eater
- firebrand
- flaming
- forward
- fury
- gagman
- gagster
- goon
- gorilla
- harum-scarum
- hellcat
- hellhound
- hellion
- hood
- hoodlum
- hot
- hothead
- hotspur
- humorist
- incendiary
- ironist
- jester
- joker
- jokester
- killer
- lampooner
- monster
- mugger
- parodist
- prankster
- punster
- rapist
- revolutionary
- satirist
- savage
- spitfire
- termagant
- terror
- terrorist
- tiger
- tigress
- tough
- virago
- vixen
- wag
- wild
- wit
- witch
- wolf
- zany
madcap (adj.)
- adventurous
- ardent
- audacious
- berserk
- bold
- brash
- brute
- comic
- daredevil
- daring
- devil
- fanatic
- fiery
- flaming
- foolhardy
- forward
- hard-core
- harebrained
- harum-scarum
- hasty
- heated
- hot
- hotheaded
- incendiary
- inflamed
- mugger
- passionate
- presumptuous
- red-hot
- revolutionary
- savage
- scorching
- terror
- terrorist
- thoughtless
- tough
- violent
- white-hot
- wild
- zany
- zealous
