aggro
nettlesome
hot and bothered
upsetting
close to the bone
aggravative
importune
irritating
irritant
aggravatingly
rile up
aggravatedly
discomfort
irritatory
inconvenience
pestilential
get under one's skin
offend
set someone's teeth on edge
get
killer
confronting
ill
mal-
rebarbative
repulse
stressful
fearful
get under one's goat
irritance
frightful
get to
exacerbatingly
pressure
beast
bugger
irritational
irritatingly
worsening
decatenate
sensy
incommodiousness
tick off
tormenting
trouble
bite
rustle someone's jimmies
stick in someone's craw
grig
upend