degeneracy

/dɪˈdʒɛnəɹəsi/

ot noun

The state of being degenerate (in all senses)
The ability of one part of the brain to take over another's function without being overexerted.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.