1611. Cotgr., Invincible,… vnsubduable, vnconquerable.
1622. W. Whately, God’s Husb., II. 108. The most mischievous,… and but by his strength vnsubduable corruptions of their nature.
1810. Southey, Kehama, XVIII. v. Her Father’s eye … spake … Stern patience unsubduable by pain.
1840. Carlyle, Heroes, iv. (1858), 291. Unsubduable granite, piercing far and wide into the Heavens!
1878. P. Bayne, Purit. Rev., xi. 499. An unsubduable capacity to make the best of things.
