become impenetrable

Examples (10)

• The dense fog began to become impenetrable, making navigation impossible.
• Over time, the fortress walls had become impenetrable to any attack.
• His arguments, once clear, seemed to become impenetrable as he continued to speak.
• The bureaucracy threatened to become impenetrable, delaying all progress.
• Without proper maintenance, the thick undergrowth will become impenetrable.
• The ancient forest had become almost impenetrable over centuries.
• After the heavy snowfall, the mountain passes became impenetrable.
• The language in the legal document started to become impenetrable without expert help.
• As the days grew shorter, the darkness outside the cabin would become impenetrable.
• The security system was designed to become impenetrable in the event of a breach.