assurance
audacity
birr
boldness
brashness
bravery
brazenness
cockiness
courage
disrespect
effrontery
fortitude
go
grit
guts
hardiness
impertinence
impudence
intrepidity
moxie
nerve
pep
pluck
potency
resolution
sand
stoutness
tuck
vigor
fearlessness
adventurousness
audaciousness
dare-deviltry
daredevilry
shamelessness
temerity
venturesomeness
adroitness
cleverness
coolness
endurance
foresight
promptitude
resourcefulness
self-reliance
self-sacrifice
stamina
steadfastness
tenacity