Related Clues:

• Master in one section of school, briefly
• A branch shortly becoming efficient
• Like an old pro
• Quite skilled
• Ace cuppa to be served up -- insert pennies separately
• Department following American expert
• Excellent department led by ace
• Very slick
• Skilled person in a section of large store, briefly
• A little section produces expert
• More than competent
• Quite skillful
• Addle-pated or highly able?
• More than merely able
• Accomplished wizard