The term 'clever, skilful' can be described by two crossword solutions: 'ABLE' (4 letters) and 'ADROIT' (6 letters). Both words refer to someone who is skilled or talented in a particular activity. A person who is ABLE to do something with ease and skill is said to be 'ABLE', while someone who is adept at using their skills and abilities is said to be 'ADROIT'. Both words imply a level of expertise and proficiency that is above average.