ban
barrier
bound
boundary
concept
confusion
danger
deadline
decision
detention
doubt
expression
face
forbid
forbidden
gray
hesitation
illegal
limit
line
look
looking
man
nogo
object
obstructed
old
outlaw
outside
outsider
pension
prohibit
prohibition
red
restricted
restricted area
senior
sight
sign
stop
suppress
suspension
symbol
taboo
touchline
white
wrinkled