unbreachable

English

Etymology

un- +‎ breachable

Adjective

unbreachable (not comparable)

1. Impossible to breach
   • 2009 January 7, Zoe Williams, “It's every cough mixture for itself in these times of ill”, in The Guardian‎^[1]:

     […] we all love work and have a sworn, unbreachable fealty to our employer.