Synonyms:
assiduous, sedulous
Meaning: marked by care and persistent effort; "her assiduous attempts to learn French"; "assiduous research"; "sedulous pursuit of legal and moral principles"
Usage examples
This, however, did not interfere in the slightest degree with the most intense interest in her, and the most assiduous attention.
Mary would sit and watch me by the hour together: then she would take lessons; and a docile, intelligent, assiduous pupil she made.