Where does “side-to-side” come from?

side-to-side (English) comes from English Side, from Middle English side, from Old English sīde, from Proto-West Germanic *sīdā, from Medieval Latin sida, from Late Latin seta, from Latin saeta, from Proto-Italic saitā — to satiate, satisfy.

side-to-side (English): Moving horizontally, from one side to another and...

Definitions

  1. Moving horizontally, from one side to another and...

Ancestry of “side-to-side”, step by step

side-to-side traces back through two separate lines of ancestry.

via English Side

StepLanguageWordMeaning
1EnglishSideA bounding straight edge of a two-dimensional shape
2Middle Englishsidecustom
3Old Englishsīdeside, flank
4Proto-West Germanic*sīdāside
5Medieval Latinsida
6Late LatinsetaAlternative form of saeta; hair, bristle; bristle
7Latinsaetaa bristle, hair on an animal; silk
8Proto-Italicsaitā
9Proto-Indo-Europeanséh₂ito-
10Proto-Indo-Europeansh₂ey-to bind, fetter
11Proto-Indo-Europeanseh₂-to satiate, satisfy

via English to

StepLanguageWordMeaning
1EnglishtoA particle used for marking the following verb as...
2Middle Englishtotoe; to; too
3Middle Englishtonethe one
4LatintonusThe stretching or straining of a rope; A strain;...
5Ancient Greekτόνοςrope, cord; chord; tone, note
6Proto-Hellenictónosrope, cord; tension
7Proto-Indo-Europeantónossomething stretched; chord, fiber, string
8Proto-Indo-Europeanten-to stretch, to extend
Every word from Proto-Indo-European seh₂-Every word from Proto-Indo-European sh₂ey-Every word from Proto-Indo-European séh₂ito-