The word for today is…
supersede (also supercede) (verb) – 1. To take the place of; replace or supplant.
2. To take the place of (a person), as in an office or position; succeed.
Grammarist reports on the alternate spelling – Supersede comes from French, and then Latin before that. In both languages it is spelled with an s. However, the misspelling supercede has been recorded for multiple centuries. Because of the pervasive use of this error, supercede is listed in most dictionaries. These entries simply refer the user to the correct spelling. It is interesting to note that the error has never been adopted as an accepted alternative, which is the case with some other widespread errors.
Source : The Free Dictionary
Etymology : Supersede ultimately derives from the Latin verb supersed?re, meaning “to sit on top of” (sed?re means “to sit”), “to be superior to,” or “to refrain from,” but it came to us through Scots Middle English, where it was rendered superceden and used in the sense of “to defer.”
It will come as no surprise that modern English speakers can be confused about how to spell this word—it sometimes turns up as supercede. In fact, some of the earliest records of the word in English show it spelled with a c. The s spelling has been the dominant choice since the 16th century, and while both spellings can be etymologically justified, supersede is now regarded as the “correct” version.
