impasse
noun
[ amˈpɑːs ]
• a situation in which no progress is possible, especially because of disagreement; a deadlock.
• "the current political impasse"
Similar:
deadlock,
dead end,
stalemate,
checkmate,
stand-off,
standstill,
halt,
stop,
stoppage,
full stop,
Origin:
mid 19th century: from French, from im- (expressing negation) + the stem of passer ‘to pass’.