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

Encyclopedia: Yup

• SW
• swab
• swabbing
• swad
• dwindling
• dwindling away
• Dy
• dyad
• dyadic
• dyadic operation
• dyarchy
• Dyaus
• Dyaus-pitar
• dybbuk
• dye
• dye-works
• dyed
• dyed-in-the-wool
• dyeing
• dyer
• dyer's greenweed
• dyer's mignonette
• dyer's rocket
• dyer's weed
• dyer's woad