Where does “-yi” come from?

-yi (Norman) comes from Old French -ier, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “-yi”, step by step

StepLanguageWordMeaning
1Old French-iersuffix used to form infinitives of first...
2Latin-āriuser
3Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

Words derived from “-yi”

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Old French -ier →