The term 'skilled in' can be defined by four crossword solutions: 'VERSED' (6 letters), 'goodat' (6 letters), 'adeptat' (7 letters), and 'cleverat' (8 letters). 'VERSED' means to be knowledgeable or experienced in a particular subject, while 'goodat' implies having a natural aptitude for something. 'Adeptat' suggests being highly proficient in a certain activity, and 'cleverat' implies being skillful and talented in a specific area. All four words indicate that someone is knowledgeable and proficient in a particular field.