incorruptibility (n.)

mid-14c.,  of matter, "imperishable;" of the soul, etc., "immortal, everlasting," from Old French incorruptible (14c.), or directly from Late Latin incorruptibilis "incorruptible," from Latin incorruptus "unspoiled, unseduced," from in- "not" (see in- (1)) + corruptus, past participle of corrumpere "to destroy; spoil," figuratively "corrupt, seduce, bribe" (see corrupt (adj.)). From 1660s in English as "not corruptible morally," especially with reference to taking bribes, etc. Related: Incorruptibly.