Etymology of the English word certitude
the English word
certitudederived from the Latin word
certitudo (certainty, certitude; assurance)
derived from the Latin word
certus (fixed, settled, firm)
derived from the Medieval Latin word
cernere (sift, separate, distinguish)
derived from the Proto-Indo-European root
*krei-Date
The earliest known usage of certitude in English dates from the 15th century.
Usage
Word found in Modern English