Where does “lengthful” come from?

lengthful (English) comes from English length, from Middle English lengthe, from Old English lengþu, from Proto-Germanic langiþō, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

lengthful (English): long

Definitions

  1. long

Ancestry of “lengthful”, step by step

lengthful traces back through two separate lines of ancestry.

via English length

StepLanguageWordMeaning
1EnglishlengthThe distance measured along the longest dimension...
2Middle Englishlengthelength
3Old Englishlengþulength
4Proto-Germaniclangiþōlongness, length
5Proto-Germaniclangazlong
6Proto-Indo-Europeandlongʰoslong

via English ful

StepLanguageWordMeaning
1Englishful
Every word from Proto-Indo-European dlongʰosEvery word from Proto-Germanic langazEvery word from Proto-Germanic langiþō