sedulous
UK: ˈsɛdjʊləs | US: ˈsɛdʒələs
adj. showing dedication and diligence; persistently hardworking
The word "sedulous" originates from the Latin sedulus, meaning "diligent" or "zealous," which itself derives from se dolus (without deceit). Over time, it evolved to emphasize earnest effort and persistence. The suffix "-ous" (from Latin -osus) denotes a quality, turning the root into an adjective describing someone who works with unwavering focus.
Her sedulous attention to detail made her an excellent editor.
The team's sedulous efforts led to the project's early completion.
He was sedulous in his studies, often working late into the night.
Sedulous practice is essential for mastering a musical instrument.
The artist’s sedulous craftsmanship was evident in every brushstroke.