The crossword solution for the term 'MOST PRETENTIOUS' is 'ARTIEST', which is a 7-letter word. The term 'artiest' is an adjective used to describe someone who is overly concerned with their own artistic or intellectual abilities and accomplishments. It is often used to describe someone who is excessively proud of their own talents and accomplishments, and who may be seen as arrogant or condescending by others.