Part 1.
dispel
force to go away
gaiety
a joyful feeling
glossy
reflecting light
limpid
clear and bright
savant
a learned person
torque
a twisting force
Part 2.
wanton
spend wastefully
appease
make peace with
austere
severely simple
confine
place limits on
coveted
greatly desired
engross
devote fully to
Part 3.
expiate
make amends for
nullify
declare invalid
peckish
somewhat hungry
portray
depict in words
predict
tell in advance
repress
conceal or hide
Part 4.
suspend
bar temporarily
waggish
witty or joking
brackish
slightly salty
plethora
extreme excess
encounter
come together
reconcile
come to terms