Where does “plainful” come from?

plainful (English) comes from English plain, from Middle English pleyn, from Anglo-Norman pleyn, from Old French playn, from Old French plain, from Latin plēnus, from Proto-Italic plēnos, from Proto-Indo-European pl̥h₁nós — to fill.

plainful (English): Full of lamentation; Plain; obvious; As much as a...

Definitions

  1. Full of lamentation; Plain; obvious; As much as a...

Ancestry of “plainful”, step by step

plainful traces back through two separate lines of ancestry.

via English plain

StepLanguageWordMeaning
1EnglishplainFlat, level; Simple; Obvious
2Middle Englishpleynclear; unambiguous
3Anglo-NormanpleynAlternative form of plein
4Old Frenchplayn
5Old Frenchplainfull; plain; flat
6Latinplēnusfull; filled; complete
7Proto-Italicplēnosfull
8Proto-Indo-Europeanpl̥h₁nósfull
9Proto-Indo-Europeanpleh₁-to fill

via English ful

StepLanguageWordMeaning
1Englishful
Every word from Proto-Indo-European pleh₁-