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.
ARTHUR DUNCAN is an American tap dancer who gained fame as the first African-American performer on the popular Lawrence Welk Show. Duncan danced and sang on the show from 1964 to the show's finale in 1982. Born in Pasadena, California in 1933, Duncan entered Pasadena City College to study pharmacy, but left school to pursue a career in show business. He never returned to school due to his success as a tap dancer and singer. He toured with the Jimmy Rodgers Show, and had his own television variety show in Australia.