Related Clues:

• What Oscar Madison wasn't
• Undiluted, at the bar
• Orderly and systematic
• Pinlike, metaphorically
• ''Gee, that's swell!''
• Immaculate
• With nothing out of place
• Straight up, at a bar
• Not likely to mess up?
• "Cool"
• ''Rad!''
• Unlike 7-Down
• Cleverly effective
• Ducky
• Well-ordered