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.

Those who have worked alongside him describe him as a "by the book man" who has had a distinguished career in public service and is "diligent about processes and acting properly."

From BBC • Apr. 20, 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 to be more diligent about closing windows on the Neo.

From The Wall Street Journal • Mar. 14, 2026

Gauci suggests the "quite remarkable" notebook suggests Geisel had been "studious" and was doing "diligent work".

From BBC • Mar. 2, 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

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