difficult
adjective
[ ˈdɪfɪk(ə)lt ]
• needing much effort or skill to accomplish, deal with, or understand.
• "she had a difficult decision to make"
Similar:
hard,
strenuous,
arduous,
laborious,
heavy,
tough,
onerous,
burdensome,
demanding,
punishing,
gruelling,
grinding,
back-breaking,
painful,
exhausting,
tiring,
fatiguing,
wearing,
wearying,
wearisome,
hellish,
killing,
knackering,
toilsome,
exigent,
problematic,
puzzling,
baffling,
perplexing,
confusing,
mystifying,
mysterious,
complicated,
complex,
involved,
intricate,
knotty,
thorny,
ticklish,
obscure,
abstract,
abstruse,
recondite,
enigmatic,
impenetrable,
unfathomable,
over one's head,
above one's head,
beyond one,
fiddly,
sticky,
no picnic,
gnarly,
wildering,
involute,
involuted,
Origin:
late Middle English: back-formation from difficulty.