Synethia is a very rare girls' name that was most common in the 1980s and has all but disappeared.
Synethia is a girl name. It last appears in U.S. records in 1991. Synethia was first reported in SSA data in 1966 and peaked in 1982 (10 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1991 | 5 | — | #15,155 |
| 1990 | 6 | — | #12,770 |
| 1988 | 6 | — | #11,615 |
| 1987 | 6 | — | #11,138 |
| 1986 | 8 | — | #8,427 |
| 1984 | 5 | — | #11,959 |
| 1983 | 7 | — | #8,896 |
| 1982 | 10 | — | #6,822 |
| 1981 | 6 | — | #10,243 |
| 1980 | 7 | — | #8,968 |
| 1979 | 6 | — | #10,052 |
| 1978 | 6 | — | #9,587 |
| 1977 | 6 | — | #9,496 |
| 1974 | 5 | — | #10,037 |
| 1973 | 5 | — | #9,611 |
| 1971 | 7 | — | #7,275 |
| 1969 | 9 | — | #5,401 |
| 1967 | 6 | — | #6,704 |
| 1966 | 7 | — | #5,735 |