Sincere, honest, or pure
Sincer is a modern English virtue name derived from the word 'sincere'. It traces back to the Latin 'sincerus', which historically meant clean, pure, or sound, often used to describe things that were unadulterated.
Fewer than 5 boys were named Sincer in 2025.
US births per 5-year period, 1990–present (SSA data).
