Conscientious and unremitting diligence.
Hard-working, diligent or regular (in attendance or work); industrious.
great and constant diligence and attention
Constant in application or attention; devoted; attentive; unremitting.
‘She grows more assiduous in her attendance.’;
Performed with constant diligence or attention; unremitting; persistent; as, assiduous labor.
‘To weary him with my assiduous cries.’;
marked by care and persistent effort;
‘her assiduous attempts to learn French’; ‘assiduous research’; ‘sedulous pursuit of legal and moral principles’;
showing great care and perseverance
‘she was assiduous in pointing out every feature’;