1. Characterized by effort to the point of exhaustion; especially physical effort
   - arduous, backbreaking, grueling [US], gruelling [Brit, Cdn], hard, heavy, laborious, punishing, toilsome

See also: effortful, operoseness

• Antony
• Antony Tudor
• antonym
• antonymous
• antonymy
• antral
• antre
• antrorse
• Antrozous
• Antrozous pallidus
• antrum
• antsy
• Antum
• Antwerp
• Antwerpen
• Anu
• Anubis
• Anunnaki
• Anura
• anuran
• anuresis
• anuretic
• anuria
• anuric
• anurous