Cydnie is a feminine name with American English pronunciation, pronounced as SID-nee (/ˈsɪdni/). It is a variation of the name Sidney. The origin of Cydnie is English, and it has associations with strength and resilience. In terms of popularity in the United States, Cydnie has seen some fluctuations over the years. It was relatively popular in the 1960s and 1970s, with rankings ranging from 5 to 6. However, its popularity declined in later decades, with fewer occurrences recorded. Despite this, Cydnie remains a unique and distinctive choice for parents looking for a name that is both classic and modern.