1. (p. pr. & vb. n.) of Astound.

2. (a.) of a nature to astound; astonishing; amazing; as, an astounding force, statement, or fact.

amazing appalling astonishing awe-inspiring awesome awful breathtaking confounding dire direful dread dreaded fell formidable ghastly ghoulish grim grisly gruesome hideous horrendous horrible horrid horrific horrifying macabre mind-boggling miraculous morbid overwhelming prodigious redoubtable schrecklich shocking spectacular staggering startling stunning stupendous surprising terrible terrific tremendous wonderful wondrous