Ahkerasti
Ahkerasti is a Finnish adverb meaning in a diligent, hardworking manner. It derives from the adjective ahkera, meaning diligent or industrious, and is formed with the adverbial suffix -sti, which yields the sense “in a … manner.” The noun form is ahkeruus (diligence), and the related comparative adjective is ahkerampi (more diligent). The term is common in everyday Finnish and in formal writing to describe how an action is carried out.
Etymology: The word comes from the root ahkera with the standard -sti suffix used to form adverbs
Usage: Ahkerasti is used to describe actions performed with sustained effort rather than a one-off or careless