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

See also: implausible

• Amphioxidae
• amphioxus
• amphipod
• Amphipoda
• Amphiprion
• Amphiprion percula
• amphiprostylar
• amphiprostyle
• amphiprotic
• amphisbaena
• Amphisbaenia
• Amphisbaenidae
• amphistylar
• amphitheater
• amphitheatre
• amphitheatric
• amphitheatrical
• Amphitheatrum Flavium
• amphitropous
• amphitropous ovule
• amphiuma
• Amphiumidae
• amphora
• amphoric
• amphoteric