1. The first performance (as of a theatrical production)
   - opening, opening night

Type of: start

• addend
• addendum
• adder
• adder's fern
• adder's tongue
• adder's tongue fern
• addible
• addict
• addicted
• addiction
• addictive
• adding machine
• Addis Ababa
• Addison's disease
• Addison's syndrome
• addition
• addition reaction
• additional
• additionally
• Additions to Esther
• additive
• additive inverse
• addle
• addlebrained
• addled