Wizard

Example:The incompetent janitor never quite managed to clean the room to the standards required.

Definition:Lacking the required skill or ability; including errors, make mistakes, unable to carry out a task efficiently.

Example:He was an amateur photographer who loved taking pictures and sharing them online.

Definition:A person who engages in an activity for pleasure rather than as a profession, especially one who is not very skilled.

Example:A novice in the field of magic, he had to rely on his more experienced colleagues for guidance.

Definition:A person who is just beginning to learn or take part in something, someone new to a task or activity and still without experience.