CAPTCHA or captcha /kapˈchə/ (computing)

A program to generate tests that humans can pass but computer programs cannot, such as the ability to recognize a distorted word, used to ensure that a response is not computer generated

• Yorkshire puddings
• Yorkshire terrier
• Yorkshire terriers
• Yoruba
• yotta-
• you
• you-all
• you and yours
• you are in good company
• you beauty
• you bet
• you can'can talk
• you can say that again
• you can't talk
• you can't win
• you could have knocked me down with a feather
• you'd
• you don't say
• youk
• you know
• you-know-what
• you-know-who
• you'll
• you name it
• you never know