complex
Byzantine
Daedalian
abstruse
arduous
balled up
beyond one
compound
confounded
confused
convoluted
crabbed
cramp
daedal
devious
difficult
elaborate
embrangled
entangled
fancy
fouled up
garbled
gordian
hard
hard to understand
implicated
intricate
involuted
involved
jumbled
knotted
knotty
labyrinthian
labyrinthine
loused up
many-faceted
matted
mazy
meandering
messed up
mixed up
mucked up
multifarious
obfuscated
obscure
obscured
ornate
overtechnical
perplexed
ramified
simple