Synonyms: industrious, hardworking, untiring, tireless
Definition: characterized by hard work and perseverance
Similar words: diligent
Definition: characterized by care and perseverance in carrying out tasks
Usage: a diligent detective investigates all clues; a diligent search of the files
Synonyms: indefatigable, unwearying, unflagging, tireless
Definition: showing sustained enthusiastic action with unflagging vitality
Usage: an indefatigable advocate of equal rights; a tireless worker; unflagging pursuit of excellence
Similar words: energetic
Definition: possessing or exerting or displaying energy
Usage: an energetic fund raiser for the college; an energetic group of hikers; it caused an energetic chemical reaction