feign
pretend to be affected by (a feeling, state, or injury)
imperceptibly
in a way that is so slight, gradual, or subtle as not to be perceived
odious
extremely unpleasant; repulsive
proclivity
a tendency to choose or do something regularly; an inclination or predisposition toward a particular thing
hone
refine or perfect (something) over a period of time
sharpen (a blade)
insidious
proceeding in a gradual, subtle way, but with harmful effects
treacherous; crafty
intuitive
using or based on what one feels to be true even without conscious reasoning; instinctive
subside
become less intense, violent, or severe
lapse into silence or inactivity
incessantly
without interruption; constantly
status quo
the existing state of affairs, especially regarding social or political issues
warily
cautiously; carefully
in a way that shows a lack of trust; suspiciously