perilous• The gnarled tree trunks-white mulberry and richbrown acacia-formed a perilous and nearly impenetrablenet.• Nationalism - from Prague to Paris, from Berlin to Budapest - is a potent, perilousbrew.• Louis in Conestoga wagons and traveled across the vast, perilous country in search of a better life in the West.• It was a most perilousenterprise, but everything for him depended on it.• Blondin soon became famous as a rope-dancer. Nothing was too perilous for him to attempt.• No feat was too perilous for him to attempt.• A perilousleap to the edge was followed by a difficult scramble over slimy rock faces.• a perilousmountain road• They forgot Mary, forgot everything except their own perilousplight.• Refugeescross the rugged San Ysidro mountains, and it is always a periloustrip.• But much more sorry that you have behaved in such an improper and perilous way.