Where does “roilsome” come from?

roilsome (English) comes from English roil, from Middle French rouiller, from Old French rouil, from Vulgar Latin robicula, from Latin rōbīgō, from Latin rōbus, from Proto-Italic rouβos, from Proto-Indo-European h₁rewdʰ- — red.

roilsome (English): Marked by roiling or agitation; turbid

Definitions

  1. Marked by roiling or agitation; turbid

Ancestry of “roilsome”, step by step

roilsome traces back through two separate lines of ancestry.

via English roil

StepLanguageWordMeaning
1EnglishroilTo render turbid by stirring up the dregs or...
2Middle Frenchrouillerto rust
3Old Frenchrouilrust
4Vulgar Latinrobicula—
5Latinrōbīgōrust
6Latinrōbusred
7Proto-Italicrouβos—
8Proto-Indo-Europeanh₁rewdʰ-red

via English some

StepLanguageWordMeaning
1EnglishsomeA certain number, at least two; An indefinite...
2Middle Englishsomsome
3Old Englishsumsome
4Proto-West Germanic*sumsome
5Proto-Germanicsumazsome (one), a certain (one)
6Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European h₁rewdʰ- →Every word from Proto-Italic rouβos →Every word from Latin rōbus →