Where does “sideache” come from?

sideache (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.

sideache (English): A pain in one's side

Definitions

  1. A pain in one's side

Ancestry of “sideache”, step by step

sideache 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 ache

StepLanguageWordMeaning
1EnglishacheTo suffer pain; to be the source of, or be in,...
2Middle EnglishacheAching; long-lasting hurting or injury; A plant...
3Old Frenchache
4Latinapiumparsley; celery; genitive plural of apis
5LatinApisA seaport town of Egypt situated at the borders with Marmarica
6Ancient GreekἌπις
7Copticϩⲁⲡⲉthe Apis bull, a bull worshipped as a herald of the gods (first Ptah, then Osiris, then Atum)
8Egyptianḥpthe god Apis
Every word from Proto-Indo-European seh₂-Every word from Proto-Indo-European sh₂ey-Every word from Proto-Indo-European séh₂ito-