Where does “rounder” come from?

Rounder derives from English round, which comes from English around, ultimately from Latin rotundus meaning wheel-shaped, itself built from Latin rota meaning wheel with the Latin suffix -are.

rounder (English): comparative form of round: more round; A...

Definitions

  1. comparative form of round: more round; A...

Ancestry of “rounder”, step by step

rounder traces back through two separate lines of ancestry.

via English round

StepLanguageWordMeaning
1EnglishroundShape; Complete, whole, not lacking; Convenient...
2Middle Englishroundcircle, round
3Old Frenchreontround
4Latinretundusround
5Latinrotundusround, circular; spherical, rotund; rounded,...
6Latinrotōto turn, trend, wheel, roll, swing about, whirl, rotate; brandish
7LatinRotaan ecclesiastical appellate court in the Catholic...
8Proto-Italicrotā
9Proto-Indo-EuropeanHróth₂-eh₂
10Proto-Indo-EuropeanHreth₂-to run

via Middle English rounder

StepLanguageWordMeaning
1Middle Englishrounder
Every word from Proto-Indo-European Hreth₂-Every word from Proto-Indo-European Hróth₂-eh₂Every word from Proto-Italic rotā