say it: WURK-day
workday is a noun meaning "a day on which work is done". It carries 2 recorded senses.
a day on which work is done
the amount of time that a worker must work for an agreed daily wage
“they work an 8-hour day”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for workday come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.