The term UNPRACTISED can be described by three crossword solutions: INEXPERIENCED (13 letters), RUSTY (5 letters), and GREEN (5 letters). INEXPERIENCED implies a lack of experience or knowledge in a particular field, while RUSTY and GREEN are both terms used to describe someone who is not proficient in a certain skill. RUSTY implies that the person has had some experience in the past but is now out of practice, while GREEN implies that the person is completely new to the skill. All three terms suggest that the person is not well-versed in the skill or activity.