at a loss
at sea
baffled
befuddled
bemused
bewildered
confounded
confused
lost
mazed
metagrabolised
metagrabolized
metagrobolised
metagrobolized
mixed-up
mystified
nonplused
nonplussed
puzzled
questioning
quizzical
stuck
Byzantine
addled
anxious
at a nonplus
at a stand
at a standstill
at an impasse
balled up
balled-up
bamboozled
beat
beyond one
bothered
buffaloed
chaotic
complex
complicated
convoluted
crabbed
cramp
daedal
dazed
devious
difficult
discomposed
disconcerted
disordered
disorganized
disturbed
doubtful
elaborate
embarrassed
embrangled
entangled
floored
flustered
fluttered
fouled up
fuddled
fussed
garbled
hard
hard to understand
implicated
Teletext
annexed
flexed
hext
next
sexed
teletext
text
vexed