Assiduous vs. Indefatigable

Assiduousadjective

Hard-working, diligent or regular (in attendance or work); industrious.

Assiduousadjective

Constant in application or attention; devoted; attentive; unremitting.

Assiduousadjective

Performed with constant diligence or attention; unremitting; persistent; as, assiduous labor.

Assiduousadjective

marked by care and persistent effort;

Assiduousadjective

showing great care and perseverance

Indefatigableadjective

Extremely persistent and untiring.

Indefatigableadjective

Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue; as, indefatigable exertions, perseverance, application.

Indefatigableadjective

showing sustained enthusiastic action with unflagging vitality;