innocent
noun
a person who lacks knowledge of evil
Synonymsinexperienced person
adjective
free from evil or guilt
“an innocent child”
“the principle that one is innocent until proved guilty”
Oppositesguiltylacking intent or capacity to injure
“an innocent prank”
Synonymsinnocuousfree from sin
lacking in sophistication or worldliness
“a child's innocent stare”
“his ingenuous explanation that he would not have burned the church if he had not thought the bishop was in it”
Synonymsingenuousnot knowledgeable about something specified
“American tourists wholly innocent of French”
“a person unacquainted with our customs”
Synonymsunacquaintedcompletely wanting or lacking
“writing barren of insight”
“young recruits destitute of experience”
(used of things) lacking sense or awareness
“fine innocent weather”
Source: WordNet 3.1, Princeton University