1. plural of impossibility; things that cannot happen or be done; situations or outcomes that are not possible
Usage: countable noun; typically used in plural form

Examples

• The engineer explained that building a bridge across the ocean presented too many impossibilities.
• Some people see obstacles as impossibilities, while others view them as challenges to overcome.
• The committee dismissed several proposals as impossibilities due to budget constraints.
• Traveling back in time remains one of the great impossibilities of physics.
• She refused to accept that her dreams were impossibilities and worked hard to achieve them.
• The list of impossibilities grew shorter as technology advanced.
• What seemed like impossibilities a century ago are now everyday realities.