diligent

[dil-i-juhnt] / ˈdɪl ɪ dʒənt /

ADJECTIVE

persevering, hard-working

Synonyms

STRONGEST

active assiduous attentive careful conscientious eager earnest indefatigable industrious painstaking persistent studious tireless

WEAK

busy constant eager beaver grind laborious occupied operose persisting pertinacious plugging sedulous steadfast unflagging unrelenting untiring

Antonyms

STRONGEST

careless disinterested idle ignorant inactive inattentive lazy neglectful thoughtless tired uncareful unconcerned unenthusiastic unscrupulous weary

WEAK

indifferent languid lethargic negligent

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.

"Luckily the keepers here are incredibly diligent, so they are noticing the subtle changes in an animal."

From BBC • Apr. 21, 2026

"Rory is as fit as a fiddle. He's so diligent with his fitness work. I think virtually every day he does an hour just working on his legs," said Brown.

From BBC • Apr. 13, 2026

There was no diligent retailer in the Philippines who realized they overcharged you for an eBay or Amazon purchase you had forgotten you made years ago, and miraculously wanted to make you whole.

From MarketWatch • Mar. 25, 2026

Herzog depicts the bushmen who aid Boyes as dignified, diligent and intelligent without romanticizing them while capturing the rugged beauty of the African landscape.

From Los Angeles Times • Mar. 24, 2026

I had made a hurried but diligent search which I finally abandoned, telling myself I’d be back for it later.

From "The Secret History" by Donna Tartt

Vocabulary lists containing diligent

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