Siddie

Siddie is a feminine name that likely originated as a diminutive form of names like Sidney/Sydney or possibly Sidonia. The '-ie' suffix creates an affectionate, vintage quality characteristic of nicknames from the late 19th and early 20th centuries. While Sidney itself has Germanic origins meaning 'wide island' or 'wide meadow,' Siddie evolved as its cozier variant. The name has a cheerful, nostalgic quality reminiscent of the era when diminutive nicknames often became given names in their own right. Extremely rare in contemporary usage, Siddie maintains an old-fashioned charm that might appeal to those drawn to vintage revival names. Its rarity gives it distinctiveness while its familiar sound structure makes it accessible.

Pronounced SID-ee.

As of October 2026, Siddie ranked #4900 for girls in US births in 1923 SSA, peaked at #926 for girls in 1881.