abettor
activator
actuator
animator
arouser
cajoler
coax
coaxer
encourager
firer
gadfly
galvanizer
human dynamo
impeller
inducer
inspirer
life
motivating force
motive power
mover
moving spirit
persuader
pleader
prime mover
prompter
restorative
spark
spark plug
sparker
stimulant
stimulator
stimulus
tempter
tonic
wheedler
actor
device
doer
worker
200-foot
50-foot
Easter
alkalosis
coney
decompensation
disequilibrium
friggin
galactica
hotlines
six-foot-six
sleep-disordered
snuggle
sparge
thermo-
thermostatic
tokamak
traumatism
well-carved