Chinese puzzle
Gordian knot
Rube Goldberg contraption
a outrance
absorb
allure
argue
argument
bag
bait the hook
ball up
bandy with
battle
battle it out
birdlime
bump heads
burden
can of worms
catch
catch out
catch up
catch up in
coil
come up against
complex
complexity
complicate
complication
concern
conflict
confound
confuse
confusion
contend with
cope with
cramp
cripple
cross swords with
cumber
decoy
disagree with
dishevel
dispute
drag
drag in
draw in
embarrass
embrangle
embroil
kelp
disarrange
enlace
entwine
interlace
intertwine
involve
lace
perplexity
twine
tangled
tangles
tangless
tangling
bare
clump
dense
knot
leafy
luxuriant
maze
purple
rag
rough
thick
Angle
Wrangell
angle
bangle
dangle
disentangle
entangle
fangle
jangle
mangle
newfangle
spangle
strangle
untangle
wangle
wrangle