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

Encyclopedia: Yup

• sonorousness
• sonsie
• sonsy
• Sontag
• soochong
• sook
• soon
• soon enough
• sooner
• sooner or later
• Sooner State
• soonest
• soot
• soot-black
• sooth
• soothe
• soother
• soothing
• soothing syrup
• soothingly
• soothly
• soothsayer
• soothsaying
• sootiness
• sooty