The term "hard working word" seems to be a combination of the phrases 'hardworking' or 'hard work'. In this context, it likely refers to someone or something characterized by a persistent, diligent, and consistent effort towards achieving a goal or completing tasks. A hardworking individual puts in significant effort and dedication into their work and responsibilities.
The word "hardworking" is a compound adjective formed from "hard" (meaning with great effort) and "working" (the present participle of "work"). The origins of "hard" can be traced to Old English "heard," meaning firm or difficult. The term "work" comes from Old English "weorc," which means labor or effort.