Related Clues:

• Just say yes
• Give the OK
• Consort
• Shake on it
• What 'I' and 'am' do
• Side (with)
• Go together well
• Reach an accord
• Please, with 'with'
• Nod in unison
• Feel the same way
• Come to the same conclusion
• Correspond, in grammar
• Go along (with)
• Act the yes man