uninitiate

nouns

people who have not been introduced to the mysteries of some field or activity
"it diverts the attention of the uninitiate"
antonym
is a type of (narrower)
(plural) any group of human beings (men or women or children) collectively
"old people"; "there were at least 200 people in the audience"

adjectives

not initiated; deficient in relevant experience
"it seemed a bizarre ceremony to uninitiated western eyes"; "he took part in the experiment as a naive subject"