Related Clues:

• 7 or 11, in Vegas
• Not standard
• Like sugar vis-à-vis Equal
• 7 or 11, in craps
• Normal
• Innate
• With 93 Down, urge
• Unrequired
• Kin of organic
• Word with "beauty" or "disaster"
• By choice, elective
• Not compulsory, discretionary
• Take it or leave it
• Inborn and normal
• Inborn, normal ( 7)