audacious
daring
sporting
swaggering
swashbuckling
venturesome
venturous
adventuresome
adversary
aggressive
aleatory
ambitious
antagonist
anti
assaulter
attacker
bold
brash
brave
chancy
con
courageous
dangerous
daredevil
death-defying
devil-may-care
dicey
doughty
driving
dynamic
enterprising
fire-eating
foolhardy
forceful
forward
full of risk
go-ahead
harebrained
hazardous
hotheaded
hustling
impetuous
imprudent
intrepid
madbrain
madbrained
madcap
match
on the go
opposer
oppugnant
adventure
adventurer
adventurism
ardent
chivalrous
excite
fearless
hardy
heroic
imaginative
reckless
warlike