Where does “rubbishry” come from?

rubbishry (English) comes from English rubbish, from Middle English rǒbǒus — rubbish.

rubbishry (English): worthless material; dross

Definitions

  1. worthless material; dross

Ancestry of “rubbishry”, step by step

rubbishry traces back through two separate lines of ancestry.

via English rubbish

StepLanguageWordMeaning
1EnglishrubbishRefuse, waste, garbage, junk, trash; An item, or...
2Middle Englishrǒbǒusrubbish

via English ry

StepLanguageWordMeaning
1EnglishryA test pattern consisting of a repeating character string alternating letters R and Y, used to test five-level teleprinter and radioteletype (RTTY) systems
Every word from Middle English rǒbǒusEvery word from English rubbish