MallowbyNames

Synethia

sih-NEE-thee-uh · Of uncertain origin or meaning; possibly a coinage combining sounds fashionable in the 1960s and 1970s.

Peak popularity
1982
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Synethia since 1966

Babies named Synethia per year in U.S. Social Security records.

3710198020002020Most births 1982Girls
Data table (by decade)
DecadeGirls
1960s22
1970s35
1980s55
1990s11
2000s0
2010s0
2020s0

Meaning & origin

Synethia is a rare, modern American name that first appeared in official records in 1966. It reached its peak popularity in 1982, during a period when creatively constructed names with lyrical endings were in vogue among some communities. The name draws influence from established feminine names like Cynthia and Bethia but does not carry a verifiable meaning. Synethia's trajectory has remained stable but low, and it has never appeared in the national top 1,000. Its rarity reflects a highly individualistic naming choice, and it is not strongly associated with any particular state or region.

Synethia first appeared in U.S. birth records in 1966. It follows a pattern of invented names from the mid-20th century that blend the prefix 'Syn-' (reminiscent of names like Cynthia or Sydney) with a feminine '-ethia' ending (as in Bethia or Letitia). The name did not derive from a classical language or established name stock; it is a modern American coinage that saw modest use primarily in the 1970s and 1980s.

Nicknames & variants

Nicknames: Syn, Nethia, Sia

Sibling names for Synethia

Names that share Synethia's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

S is for Synethia, our favorite little girl.

S is for Synethia…”

In a Mallowby alphabet book, Synethia's letter becomes Synethia's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Synethia's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does Synethia mean?
The meaning of Synethia is uncertain. It is likely a modern invented name combining popular sounds from the 1960s and 1970s, with no known etymological root.
How popular is Synethia today?
Synethia has not ranked among the top 1,000 names in the U.S. in recent decades. Its peak year was 1982, and as of 2025 it remains rare, with fewer than 5 births per year.
Is Synethia a boy or girl name?
Synethia is used almost exclusively for girls.