1. Not easy to believe
   - incredibly, implausibly, unbelievably

See also: improbable

• alike
• alikeness
• aliment
• alimental
• alimentary
• alimentary canal
• alimentary paste
• alimentary tract
• alimentary tract smear
• alimentation
• alimentative
• alimony
• aline
• alinement
• aliphatic
• aliphatic compound
• aliquant
• aliquant part
• aliquot
• aliquot part
• ALIR
• Alisma
• Alisma plantago-aquatica
• Alismales
• Alismataceae