Other hyponyms of difficulty include
asperity,
grimness,
hardship,
rigor,
rigorousness,
rigour,
rigourousness,
severeness,
severity,
hardness,
ruggedness,
formidability,
toughness,
burdensomeness,
heaviness,
onerousness,
oppressiveness,
niceness,
subtlety,
inconvenience,
troublesomeness,
worriment,
problem,
trouble,
facer,
killer,
kink,
pisser,
booby trap,
pitfall,
snorter,
balk,
baulk,
check,
deterrent,
handicap,
hinderance,
hindrance,
impediment,
wrinkle,
bitch,
plight,
predicament,
quandary,
rattrap,
pinch,
fix,
hole,
jam,
kettle of fish,
mess,
muddle,
pickle,
hard time,
rough sledding,
strain,
stress,
mire,
job,
problem,
situation,
urinary hesitancy,
wall,
thorniness.