diligent
[adjective]
Synonyms: hard-working, assiduous, attentive, careful, conscientious, industrious, painstaking, persistent, studious, tireless

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Antonyms: dilatory
Contrasted words: deliberate, laggard, leisurely, slow, desultory
Related Words: persevering, persistent, persisting, unflagging

[TahlilGaran] English Synonym Dictionary ▲

dil‧i‧gent /ˈdɪlədʒənt, ˈdɪlɪdʒənt/ adjective
[Date: 1300-1400; Language: French; Origin: Latin, present participle of diligere 'to put high value on, love']
someone who is diligent works hard and is careful and thorough:
a diligent student
—diligently adverb:
They worked diligently all morning.
—diligence noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲