inexperienced
inexperience + -ed
https://gyazo.com/b8785b81ed7616b7ae834c601b6aafd2
source: Im still a virgin - Album on Imgur
adjective
having little knowledge or experience of a particular thing:
«…に» 経験の浅い, 未熟な, 初心者の «in» ; 世間知らずの
e.g. an inexperienced driver
e.g. he is still relatively young and inexperienced.