Etymology

sincere

sin·cere
S1I1N1C3E1R1E1

Today it means: Genuine, honest, and free from pretense or deceit; heartfelt. Full definition →

Middle French sincere ← Latin sincerus ← Proto-Indo-European *sem-
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The story

  1. Proto-Indo-European · derived from*sem-“together”
  2. Latin · derived fromsincerus“genuine”
  3. Middle French · borrowed fromsincere
  4. English todaysincere

From Middle French sincere, from Latin sincerus (“genuine”), from Proto-Indo-European *sem- (“together”) (whence English sam) + *ḱer- (“grow”) (whence Latin Ceres, the goddess of harvest, etymon of cereal). Not from sine (“without”) + cera (“wax”), which is a folk etymology; see Wikipedia page.

Words from the same roots

Latinsincerus all →

sincerely

Proto-Indo-European*sem- all →

somesamesingleseemsamassemblesimplexassimilatesemblanceselfsamesimulacrumbeseemheterodontsiglumsingulative

Etymology from Wiktionary, CC BY-SA 4.0.