1. Much less
   - let alone, not to mention

1. It does not matter
   - no matter

Encyclopedia: Never mind

• a.k.a.
• aa
• AAA
• Aachen
• aah
• Aaland islands
• Aalborg
• aalii
• Aalst
• Aalto
• Aar
• aardvark
• aardwolf
• Aare
• Aare River
• aargh
• Aarhus
• Aaron
• Aaron Burr
• Aaron Copland
• Aaron Montgomery Ward
• Aaron's rod
• AARP
• AAS
• AAVE