labefaction
Concise Oxford English Dictionary © 2008 Oxford University Press:
labefaction /ˌlabɪˈfakʃ(ə)n/
▶noun archaic deterioration or downfall.
– origin C17: from L. labefactio(n-), from labefacere ‘weaken’, from labi ‘to fall’ + facere ‘make’.
'labefaction' also found in these Oxford entries:

