The story
- Latin · derived fromsincēritās
- Medieval Latin · derived fromsincēritās
- Old French · derived fromsincerité
- Middle English · inherited fromsinceritie
- English todaysincerity
From Middle English sinceritie, from Old French sincerité and Medieval Latin sincēritās; both from Latin sincēritās, from sincērus + -tās. Equivalent to sincere + -ity.
Etymology from Wiktionary, CC BY-SA 4.0.