Definition of inobservance in English:

inobservance

noun

dated
  • 1Failure to observe or notice; inattention.

    1. 1.1Failure to keep or observe a law, custom, promise, etc.

Origin

Early 17th century: from French, or from Latin inobservantia, from in- (expressing negation) + observantia observance (from observare observe).

Pronunciation:

inobservance

/ˌinəbˈzərvəns/