impede
interfere with
hamper
hinder
obstruct
inhibit
frustrate
thwart
foil
spoil
stall
shackle
fetter
stop
check
block
cripple
handicap
scotch
put paid to
put the kibosh on
snooker
scupper
throw a spanner in the works of
throw a monkey wrench in the works of
приклади
the changes must not be allowed to stymie new medical treatments