infrangible
1. [ adjective ] difficult or impossible to break or separate into parts
Examples:

"an infrangible series"

Related terms: unbreakable
2. [ adjective ] not capable of being violated or infringed
Synonyms: inviolable absolute
Examples:

"infrangible human rights"

Related terms: inalienable
Similar spelling:   infrasonic
  infrahuman
  infra_dig