Where does “unfoulable” come from?

unfoulable (English) comes from English foulable, from English foul, from Middle English foulen, from Old English fūlian, from Proto-Germanic fūlāną, from Proto-Germanic -āną, from Proto-Germanic -ajaną, from Proto-Indo-European -oyéti — he, she.

unfoulable (English): Not foulable

Definitions

  1. Not foulable

Ancestry of “unfoulable”, step by step

unfoulable traces back through two separate lines of ancestry.

via English foulable

StepLanguageWordMeaning
1EnglishfoulableCapable of becoming fouled
2EnglishfoulCovered with, or containing unclean matter;...
3Middle EnglishfoulenTo dirty or foul; to make or become dirty
4Old Englishfūlianto become foul; rot; decay
5Proto-GermanicfūlānąTo become foul; rot; decay
6Proto-Germanic-ānąCreates factitive verbs from adjectives, later...
7Proto-Germanic-ajaną—
8Proto-Indo-European-oyétiCreates factitive verbs from adjectives
9Proto-Indo-European-yétiCreates intransitive, often deponent,...
10Proto-Indo-Europeanyé-—
11Chichewaiyehe, she

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Chichewa iye →Every word from Proto-Indo-European -yéti →Every word from Proto-Germanic -āną →