Where does “platitudeness” come from?

platitudeness (English) comes from English platitude, from French platitude, from French plat, from Middle French plat, from Old French plat, from Vulgar Latin plattus, from Ancient Greek πλατύς, from Proto-Indo-European pléth₂us — flat.

platitudeness (English): The quality of being platitudinous;...

Definitions

  1. The quality of being platitudinous;...

Ancestry of “platitudeness”, step by step

platitudeness traces back through two separate lines of ancestry.

via English platitude

StepLanguageWordMeaning
1EnglishplatitudeAn often-quoted saying that is supposed to be...
2Frenchplatitudeflatness; blandness; lack of originality
3Frenchplatflat; a flat area of ground; a flat thing; a flat...
4Middle Frenchplatflat
5Old Frenchplata footbridge
6Vulgar Latinplattusflattened; flat; smooth
7Ancient Greekπλατύςwide, broad; flat, level; broad-shouldered
8Proto-Indo-Europeanpléth₂usflat, broad
9Proto-Indo-Europeanpleth₂-flat

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European pleth₂-Every word from Proto-Indo-European pléth₂usEvery word from Ancient Greek πλατύς