Source : Webster's Revised Unabridged Dictionary (1913)

Workyday \Work"y*day`\, n. [See {Workday}, {Workingday}.]
   A week day or working day, as distinguished from Sunday or a
   holiday. Also used adjectively. [Written also {workiday}, and
   {workaday}.] [Obs. or Colloq.]

         Prithee, tell her but a workyday fortune. --Shak.