exoteric
Concise Oxford English Dictionary © 2008 Oxford University Press:
exoteric /ˌɛksə(ʊ)ˈtɛrɪk/
▶adjective formal intended for or likely to be understood by the general public. The opposite of esoteric.
– origin C17: via L. from Gk exōterikos, from exōterō ‘outer’.
'exoteric' also found in these Oxford entries:

