consenescence
noun
con·se·nes·cence
ˌkän(t)sə̇ˈnesən(t)s
plural -s
: general decay especially from old age
Word History
Etymology
Latin consenescere to grow old together, to grow old in a profession, to become weak (from com- + senescere, inchoative of senere to be old, from senex old) + English -ence