style it out
rely on
make book
superconfident
confidently
have one's tail up
ultraconfident
fiducially
surely
surefooted
hyperconfident
empowered
feel up to
bet a dollar to a doughnut
assertive
self-confidently
jaunty
boldly
sure-handed
believe
trust
securely
convincingly
too big for one's britches
jauntily
positively
composed
self-assuredly
competently
rosily
overweening
home and dry
credibly
anticipation
expectation
like a boss
can-do
uptightly
compellingly
satisfiable
performantly
life-affirming
prudently
determinedly
stand-to
proficuously
avowable
proficiently
natural
knack