aggravating
annoying
bothering
bothersome
chafing
disquieting
distressful
distressing
disturbing
exasperating
fretting
galling
importunate
importune
irking
irksome
irritating
pesky
pestering
pestiferous
pestilent
pestilential
plaguesome
plaguey
plaguing
provoking
teasing
tiresome
tormenting
troublesome
troubling
upsetting
vexatious
vexing
wearisome
worrisome
worrying
amassing
classing
gassing
hassing
massing
passing
surpassing