1. Having a mental age of three to seven years
   - imbecile, idiotic

See also: imbecile, retarded

• yenta
• yeoman
• yeoman of the guard
• yeomanry
• yep
• yer
• yerba buena
• yerba mansa
• yerba santa
• Yerevan
• Yerkes
• Yersin
• Yersinia pestis
• Yerupaja
• Yerwa-Maiduguri
• yes
• yes-man
• yes-no question
• yeshiva
• yeshivah
• yester
• yesterday
• yesternight
• yesteryear
• yet