Related Clues:

• Yielded
• Gave in
• Gave up, slangily
• Surrendered
• Submitted
• Knuckled under
• Went spelunking
• Buckled
• Yielded under pressure
• Cried uncle
• Yielded (with "in")
• -- in (collapsed)
• Collapsed, with ''in''
• Collapsed, with 'in'
• Acceded, informally