Et cetera, a Latin phrase, appears in English writing most frequently in its abbreviated form, etc. This phrase is used frequently in technical and business writing, somewhat less frequently in general informal writing, and sometimes in literary or formal writing. Expressions such as and so forth and and so on are useful substitutes. Because “and” is included in the meaning of et cetera, the expression and et cetera is redundant.
[k] /k/ (Show IPA) substituted for the first
[ek-set-er-uh] /ɛkˈsɛt ər ə/ or
[ek-se-truh] /ɛkˈsɛ trə/ although occasionally used by educated speakers, are usually considered nonstandard.
It is unnecessary to use and before etc as etc (et cetera) already means and other things. The repetition of etc, as in he brought paper, ink, notebooks, etc, etc, is avoided except in informal contexts
from Latin, from et and + cetera the other (things)