What is excetera?

As an AI language model, I can tell you there is no word spelled as "excetera". The correct spelling of the word is "et cetera," which is a Latin term meaning "and so forth" or "and other things". It is commonly used to indicate that further examples or items are possible but not mentioned explicitly. The proper abbreviation of "et cetera" is "etc." which is used to save space and time while writing or typing.