1. Indicates an affirmative response
   - ay, aye, sure, uh-huh, yah [UK], yea, yeah, yep, yes, ya [S.Africa]

Encyclopedia: Yup

• aldosterone
• aldosteronism
• Aldous Huxley
• Aldous Leonard Huxley
• aldrin
• Aldrovanda
• Aldrovanda vesiculosa
• ale
• ale drinker
• aleatory
• aleatory contract
• alec
• Alec Douglas-Home
• Alec Guinness
• aleck
• alecost
• Alectis
• Alectis ciliaris
• Alecto
• Alectoria
• Alectoris
• Alectoris graeca
• Alectoris ruffa
• Alectura
• Alectura lathami