Suffix -ity. Used to form a noun from an adjective; especially, to form the noun referring to the state, property, or quality of conforming to the adjective's description. Used to form other nouns, especially abstract nouns. Usage notes . Many nouns formed with -ity are uncountable; those that are countable form their plurals in -ities.
Duncan Hazlett McGuire was an Australian musician, songwriter, recording engineer and producer. He was associated with vocalist, Doug Parkinson, in various groups during the 1960s and 1970s; McGuire was also a founding member of the jazz fusion band, Ayers Rock from 1973 until he left in 1976.
Production. Toby Wan-Kenobi Duncan is the fifth and youngest child of Bob and Amy Duncan. He was revealed to have been conceived prior to the events of Good Luck Charlie, It's Christmas! he was born in the episode  Special Delivery , 8 days overdue and in an ice-cream truck.