1. Striking dumb by magnitude; astonishing; wonderful; of astonishing magnitude or elevation. See Stupefy.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• stupindous,
• stupendas,
• stupendouss,
• supendous,
• stupendious,
• stuppendus,
• stupedeous,
• atupendous,
• ztupendous,
• xtupendous,
• dtupendous,
• etupendous,
• wtupendous,
• srupendous,
• stupenous,
• stupenduos,
• stupporous,
• stapedious,
• Stameneous,
• stupedness

• stephen,
• stevenson,
• Stephens,
• steepen,
• stevens,
• stupendously,
• stipend,
• steuben.

The adjective form of the word "stupendous" is "stupendous".

The plural form of the word "stupendous" is "stupendous." The word does not change its form when singular or plural.

The singular form of the word "stupendous" is "stupendous". The word does not change in form when it becomes singular.