afferent neuron
animate
annoy
anxiety
aplomb
apprehension
assurance
assure
audacity
autonomic nervous system
axon
backbone
balance
balanced personality
balls
beef up
boldness
bolster
bottle
bottom
brace
brace up
brain
brashness
brass
bravery
brazenness
buck up
buttress
case harden
central nervous system
cerebral cortex
cheek
cheer
chirk up
chutzpah
confidence
confirm
constancy
cool
coolness
courage
craniosacral nervous system
crust
daring
dauntlessness
dendrite
braveness
courageousness
poise
nerved
nerves
nerving
bone
emotion
energy
heart
imagination
limb
muscle
organ
pain
stomach
temper
tissue
Merv
conserve
curve
deserve
mirv
observe
oeuvre
preserve
reserve
serv
serve
swerve
underserve
unnerve
verve