Onnie

Meaning & origin

Onnie is a rare and endearing name that saw its peak use in 1904, the year it reached its highest recorded frequency. Although it first appeared in Social Security records in 1886, it never gained widespread popularity and has remained off the ranked list of top names. Its trajectory over recent decades has been stable but extremely low, with no significant revival. The name is likely a diminutive or variant of other names, such as Ona or Ondine, fitting a pattern of sweet, short names popular in the early 1900s. Without a clear etymology, Onnie retains an air of mystery, appealing to those seeking a vintage, uncommon choice with historical roots in the late 19th and early 20th centuries. It has not been strongly associated with any particular state or region, reflecting its scattered, infrequent use.

Onnie is likely a pet form or diminutive of longer names such as Ona, a variant of Oona (from Irish Úna meaning 'lamb'), or possibly of names like Ondine or Onslow. It emerged as an independent given name in the late 19th century, especially in the United States, where it was predominantly used for girls. Its usage peaked in 1904 and has since remained rare.