Sophomore

Someone who feels super knowledgeable about a particular area of expertise and has little actual experience.
Inappropriately confident about a particular area of expertise.

Often used in the medical field to describe know it all junior coworkers.

Example: "That new emergency room intern is a real sophomore, he has all the answers and no questions".
Basically teenagers behave this way. They know everything until they age into ignorance.

27👍 15👎