assiduous
UK: əˈsɪdʒ.u.əs | US: əˈsɪdʒ.u.əs
adj. showing great care, attention, and effort
adj. persistently diligent; hardworking
assiduous = assidu<constant> + ous<adjective suffix>
- assidu (from Latin assiduus, meaning "constant, unremitting," derived from assidēre "to sit by, attend to" < ad- "to" + sedēre "to sit")
- ous (adjective-forming suffix indicating "full of" or "possessing the quality of")
Etymology Origin:
The word assiduous traces back to Latin assiduus, which originally described someone who was constantly present or attentive, like a servant or worker "sitting by" their task. Over time, it evolved to emphasize persistent effort and diligence. The root sedēre (to sit) also appears in words like sedentary and session, reflecting the idea of steady, focused labor.
She was assiduous in her studies, spending hours in the library every day.
His assiduous attention to detail made him an excellent editor.
The team’s assiduous efforts led to the project’s success.
An assiduous gardener tends to their plants with unwavering care.
Her assiduous preparation for the exam earned her top marks.