- insuperable
- adj1. insurmountable, overwhelming, overpowering, overcoming, overmastering, overmatching; oppressive, burdensome, backbreaking, crushing, demoralizing, defeating.2. invincible, unconquerable, inviolable, inexpugnable; impenetrable, inaccessible, unaccessible, impassable; impregnable, invulnerable, indestructible, unde-stroyable, imperishable, nonperishable, Obs., Rare. imperdible; unassailable, unattackable, formidable, powerful, mighty; indomitable, redoubtable, unyielding, undefeatable, unbeatable; tenable, secure, safe, safe and sound; stout, sturdy, strong, solid, stable, staunch, stanch.
A Note on the Style of the synonym finder. 2014.