What is "labefaction"

Labefaction \Lab`e*fac"tion\, n. [See Labefy.] The act of labefying or making weak; the state of being weakened; decay; ruin.

There is in it such a labefaction of all principles as may be injurious to morality.
--Johnson.

1610s, "process of shaking; downfall," noun of action from Latin labefactus, past participle of labefacere "to cause to totter, shake; overthrow," from labi "to slip, slide" (see lapse (n.)) + facere "to make, do" (see factitious). Related: Labefy.

n. (context rare English) The act of shake or weakening or the resulting state; overthrow, ruination.