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.

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

I had to be more diligent about closing windows on the Neo.

From The Wall Street Journal • Mar. 14, 2026

She was particularly diligent about checking for accuracy.

From The Wall Street Journal • Feb. 26, 2026

“I would hate to criticize him for not being more diligent, but it is frustrating,” said Skyhawk in a 1995 interview about the initiative.

From Los Angeles Times • Feb. 17, 2026

Even in that last battle, he had been well served by what he called the “honest, sensible and diligent men” of Americas first intelligence service.

From "George Washington, Spymaster" by Thomas B. Allen

Vocabulary lists containing diligent

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Grade 9, List 1

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