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

Encyclopedia: Yup

• articulatio synovialis
• articulatio talocruralis
• articulatio temporomandibularis
• articulatio trochoidea
• articulation
• articulative
• articulator
• articulatory
• articulatory system
• Artie Shaw
• artifact
• artifactual
• artifice
• artificer
• artificial
• artificial additive
• artificial blood
• artificial flower
• artificial heart
• artificial horizon
• artificial insemination
• artificial intelligence
• artificial joint
• artificial kidney
• artificial lake