As-sid'ū-oūs, a.

a. [Lat. assiduus, from assidēre, to sit near or close, from ad and sedēre, to sit; Pr. assiduos, Fr. assidu.] 1. Constant in application or attention; devoted; attentive; unremitting. She grows more assiduous in her attendance. Addison. 2. Performed with constant diligence or attention; as, assiduous labor. To weary him with my assiduous cries. Milton. Syn.—Diligent; attentive; sedulous; unwearied; unintermitted; persevering; laborious; indefatigable.