Where does “fullsib” come from?

fullsib (English) comes from English full, from Middle English fúl, from Old English full, from Proto-West Germanic full, from Proto-Germanic fullaz, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

fullsib (English): A full sibling

Definitions

  1. A full sibling

Ancestry of “fullsib”, step by step

fullsib traces back through two separate lines of ancestry.

via English full

StepLanguageWordMeaning
1EnglishfullContaining the maximum possible amount that can...
2Middle Englishfúlvery; much; to a great extent
3Old Englishfullfull, filled, complete, entire; a beaker; a cup,...
4Proto-West Germanicfullfull
5Proto-Germanicfullazfull; the whole, the entire
6Proto-Indo-Europeanpl̥h₁nósfull
7Proto-Indo-Europeanpleh₁-to fill

via English SIB

StepLanguageWordMeaning
1EnglishSIBHaving kinship or relationship; related by same-bloodedness; kindred
2Middle Englishsibhaving kinship; kinsmen; peace
3Old Englishsibbkinship; peace
4Proto-West Germanicsibbjurelationship, kinship
5Proto-Germanicsibjōrelationship, kinship; friendship
6Proto-Indo-Europeansebʰ-
Every word from Proto-Indo-European pleh₁-