The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Italic*n̥-
- Latinin-
- Proto-Indo-European*sep-
- Proto-Italic*sapjō
- Latinsapiō
- Proto-Indo-European*dʰeh₁-
- Latinsapidus
- Latinīnsipidu
- Frenchinsipide
- English todayinsipid
From French insipide, from Latin īnsipidus (“tasteless”), from in- (“not”) + sapidus (“savory”). In some senses, perhaps influenced by insipient (“unwise, foolish, stupid”).
Etymology from Wiktionary, CC BY-SA 4.0.