Related Clues:

• Absolutely the last to study at university?
• "Uh-huh!"
• Relative of 61-Across
• 'Sho' nuff!'
• 3 Down opposite
• Slangy 'yes'
• 'Fer sure!'
• "No prob"
• Western ''oui''
• Slangy ''yes''
• Western affirmative
• Cowpoke's assent
• 'Ya got that right'
• 'Nope' opposite
• “You betcha!”