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.

Avoiding price increases for consumers will require diligent utility commissioners who scrutinize spending plans and push for the grid to be used more efficiently, he said.

From The Wall Street Journal • Apr. 14, 2026

Indexing presumes general market efficiency: The counterparty to an active seller is an active buyer; both are confident, well-staffed and diligent.

From The Wall Street Journal • Mar. 27, 2026

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

From BBC • Mar. 2, 2026

“This will hit unevenly,” Lau added, noting that big players have been diligent with recording Harmonized Tariff Schedule codes for their imports.

From MarketWatch • Feb. 20, 2026

She was diligent and obedient and believed with all her heart that one day her prayers would be answered.

From "Night Owls" by A.R. Vishny

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