As*sid"u*ous (#), a. [L. assiduus, fr. assidre to sit near or close; ad + sedre to sit. See Sit.]
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.
Syn. -- Diligent; attentive; sedulous; unwearied; unintermitted; persevering; laborious; indefatigable.
As*sid"u*ous*ly, adv. -- As*sid"u*ous*ness, n.
© Webster 1913.