Where does “platitudinousness” come from?

platitudinousness (English) comes from English platitudinous, 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 — flat.

platitudinousness (English): The quality of being platitudinous

Definitions

  1. The quality of being platitudinous

Ancestry of “platitudinousness”, step by step

platitudinousness traces back through two separate lines of ancestry.

via English platitudinous

StepLanguageWordMeaning
1EnglishplatitudinousCharacterised by clichés or platitudes
2EnglishplatitudeAn often-quoted saying that is supposed to be...
3Frenchplatitudeflatness; blandness; lack of originality
4Frenchplatflat; a flat area of ground; a flat thing; a flat...
5Middle Frenchplatflat
6Old Frenchplata footbridge
7Vulgar Latinplattusflattened; flat; smooth
8Ancient Greekπλατύςwide, broad; flat, level; broad-shouldered
9Proto-Indo-Europeanpléth₂usflat, broad
10Proto-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