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Synonyms

assiduously

American  
[uh-sij-oo-uhs-lee] / əˈsɪdʒ u əs li /

adverb

  1. with careful and consistent effort; diligently or tirelessly.

    The Department of Health is still working assiduously with the schools to prevent further spread of the disease.

  2. constantly; ceaselessly.

    He referred to the boys assiduously as “gentlemen.”


Other Word Forms

Etymology

Origin of assiduously

assiduous ( def. ) + -ly

Explanation

Something done assiduously is done with care and dedication. If you assiduously count your lemonade stand earnings, you tally up the dimes and quarters very carefully, possibly counting them twice to make sure you get it right. Diligence, care, thoroughness, precision — all of these describe what's needed to do something assiduously. It comes from the Latin word assiduus, which means "busy, incessant, continual, or constant." The people who shelve books at your local library do so assiduously — they take great care to put the books exactly where they belong in the stacks so that others can find them.

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Vocabulary lists containing assiduously

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

They had assiduously saved the cash that came in from gifts and summer jobs, and it had compounded over time to reach a princely sum.

From MarketWatch May 5, 2026

Mr. Currey asks an important question about Genet, but assays no answer: “Was it prison that enabled his writing, or was it the act of theft that he practiced so assiduously during all those years?”

From The Wall Street Journal Apr. 10, 2026

The comments prompted an outraged Gisèle to exit the courtroom mid-session for only the second time in the trial, which she otherwise followed assiduously – as she is expected to do again next week.

From BBC Oct. 3, 2025

The video was the latest in many reports published by Navalnaya in the months after her husband’s death, which she promised to assiduously investigate as part of an effort to prove Kremlin complicity.

From The Wall Street Journal Sep. 17, 2025

Seeing that the priest had properly and assiduously observed all the procedures, millions of devout French Catholics behaved as if God really existed in the consecrated bread and wine.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari

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