1. A musical interval that spans three degrees of diatonic scale

Encyclopedia: Major third

• unbreakableness
• unbridgeable
• unbridle
• unbridled
• unbroken
• unbrushed
• unbuckle
• unbundle
• unburden
• unburdened
• unburied
• unburned
• unburnished
• unburnt
• unbutton
• unbuttoned
• uncalled-for
• uncamphorated
• uncannily
• uncanny
• uncap
• uncapped
• uncarbonated
• uncared-for
• uncaring