Re‐lent″less, a. Unmoved by appeals for sympathy or forgiveness; insensible to the distresses of others; destitute of tenderness; unrelenting; unyielding; unpitying; as, a prey to relentless despotism.
For this the avenging power employs his darts,...
Thus will persist, relentless in his ire. Dryden.
— Re‐lent″less‐ly, adv. — Re‐lent″less‐ness, n.