From Old French incertaineté.
incertainty (countable and uncountable, plural incertainties)
- (obsolete) Uncertainty.
- 1621, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy, Oxford: Printed by Iohn Lichfield and Iames Short, for Henry Cripps, OCLC 216894069:, II.4.1.i:
- all is naught, full of imposture, incertainty, and doth generally more harm then good.