Unpracticed (adjective)

1. Not having experience or skill in a particular activity.
2. Not having performed or exercised a particular activity.
3. Not proficient or expert in a particular activity.

Origin:

Late 17th century, from un- + practiced.

Examples:

1. The unpracticed athlete performed poorly in the competition.
2. The unpracticed singer sang off-key.
3. The unpracticed dancer struggled with the steps.
4. The unpracticed chef burned the food.
5. The unpracticed pilot made mistakes during the flight.