thwart
defeat
foil
block
stop
put a stop to
counter
spoil
check
balk
circumvent
disappoint
forestall
bar
dash
scotch
quash
crush
derail
nip in the bud
baffle
nullify
snooker
obstruct
impede
hamper
hinder
stifle
fetter
hamstring
cripple
put a brake on
stand in the way of
spike someone's guns
examples
it can be very frustrating to find that the size you want isn't there