gotcha
troublement
where the shoe pinches
troublemaking
fractious
problem
praemunire
give someone a hard time
warning bell
monkey wrench
hitch
rub
hard-set
hot water
problematizable
beleaguered
Pandora's box
catch a cold
rear one's head
bitch
up the pole
trouble
snag
chopping block
banana peel
banana skin
pain in the butt
problematicity
gremlin
badass
bother
come back to bite
throw a wrench in
time bomb
ticking bomb
box
enmesh
hard time
counterdifficulty
doo-doo
spinous
pressure point
crunch
on condition
problemise
troubling
hard nut to crack
tribulation
throw a spanner in the works
tough nut to crack
headache
out to get someone
bind
pitfall
killer
boned
bijou problemette
booby trap
put out a fire
cross-grained
diagnose
torfer
ill
at a pinch
in a pinch
tsuris
thumbscrew
job
goof up
counterproblem
hard sledding
bebother
run up against
a bad penny always turns up
complacent
raise the spectre
roll of the dice
hassle
lion in the way
shit-stirring
escape fire
dilemma
confliction
conjuncture
strife
thing
troublesomeness
in a bind
multiproblem
situation
questionable
problematological
wheel within a wheel