Definitions

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.

The company has remained diligent following a significant operational recovery in 2025, delivering a statutory profit and progress toward operational targets, Hussain says.

From The Wall Street Journal • May 6, 2026

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

From BBC • Apr. 21, 2026

“I was wild and in the streets, not diligent in any way about anything, but I really loved it.”

From Los Angeles Times • Mar. 25, 2026

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

From The Wall Street Journal • Mar. 14, 2026

When it came to the classroom, he said that Boobie was diligent, studying for tests when he had to and doing homework.

From "Friday Night Lights: A Town, A Team, And A Dream" by H.G. Bissinger

Vocabulary lists containing diligent

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Grade 9, List 1

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