/ ɪnˈdʌstriəs; NAmE / adjective
( approving ) working hard; busy
SYN hard-working :
an industrious student
► in·dus·tri·ous·ly adverb
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WORD ORIGIN
late 15th cent. (in the sense skilful, clever, ingenious ): from French industrieux or late Latin industriosus , from Latin industria diligence.