1. extremely safe; having the highest level of safety or security

Examples

• The new car model features ultrasafe technology to protect passengers.
• Parents want ultrasafe playground equipment for their children.
• The bank’s ultrasafe vault protects valuable items from theft.
• Scientists developed an ultrasafe vaccine with minimal side effects.
• The ultrasafe design of the building can withstand earthquakes.
• Airlines prioritize ultrasafe flight procedures above all else.