Etymograph

English

insincere

Insincere comes from Latin insincerus ‘not honest, not candid, insincere’, from sincērus ‘clean, sincere’, and ultimately from Proto-Indo-European *sem- ‘one, whole’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sem-‘one, whole’reconstructed
  2. Proto-Italicc. 1500–700 BCE*senkairosreconstructed
  3. Latinc. 75 BCE–200 CEsincērus‘clean, sincere’
  4. Latin, derivedc. 75 BCE–200 CEinsincerus‘not honest, not candid, insincere’
  5. Englishtodayinsincere

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sem-‘one, whole’reconstructed
  2. Proto-Italicc. 1500–700 BCE*senkairosreconstructed
  3. Latinc. 75 BCE–200 CEsincērus‘clean, sincere’
  4. Latin, derivedc. 75 BCE–200 CEinsincerus‘not honest, not candid, insincere’
  5. Englishtodayinsincere

Linked words

through Proto-Indo-European *sem- ‘one, whole’

some, same, seem, similar, single, simple, simply, soft, sam, simulation, assemble, resemble, anomaly, singular, simultaneous, simulate, resemblance, anomalous, assimilate, homeopathic, semblance, synapse, homology, hyphen, simile, homolog, simulacrum, synchronise, sempre, 46 more

through Latin sincērus ‘clean, sincere’

sincerely, sincerity, 1 more

Today it means

adj Expressing words or behaviors that one does not genuinely feel or endorse; not genuine; artificial; factitious.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *sem- / insincere

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