Where does “masteries” come from?

masteries (English) comes from English mastery, from Middle English maistrie — a masterly operation; a feat.

masteries (English): plural of mastery

Definitions

  1. plural of mastery

Ancestry of “masteries”, step by step

masteries traces back through two separate lines of ancestry.

via English mastery

StepLanguageWordMeaning
1EnglishmasteryThe position or authority of a master; dominion;...
2Middle Englishmaistriea masterly operation; a feat

via English ies

StepLanguageWordMeaning
1Englishiesplural of i, the name of the letter I
Every word from Middle English maistrieEvery word from English mastery