Daredevil
Part of speech: noun
Definition: A person who risks life and limb for a living, or to be seen
Part of speech: adjective
Definition: recklessly bold; adventurous
Example sentence: I don't want to portray myself as a daredevil. I'm not at all.
Madcap
Part of speech: adjective
Definition: impulsive, hasty or reckless; capricious.