Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb astound

1 sense of astound

Sense 1
amaze, astonish, astound -- (affect with wonder; "Your ability to speak six languages amazes me!")
       => surprise -- (cause to be surprised; "The news really surprised me")

Antonyms of adj astounding

2 senses of astounding

Sense 1
astounding, dumbfounding, dumfounding -- (bewildering or striking dumb with wonder)

INDIRECT (VIA incredible) -> credible, believable -- (capable of being believed; "completely credible testimony"; "credible information")

Sense 2
astonishing, astounding, staggering, stupefying -- (so surprisingly impressive as to stun or overwhelm; "such an enormous response was astonishing"; "an astounding achievement"; "the amount of money required was staggering"; "suffered a staggering defeat"; "the figure inside the boucle dress was stupefying")

INDIRECT (VIA impressive) -> unimpressive -- (not capable of impressing)

Similarity of adj astounding

2 senses of astounding

Sense 1
astounding, dumbfounding, dumfounding -- (bewildering or striking dumb with wonder)
       => incredible (vs. credible), unbelievable -- (beyond belief or understanding; "at incredible speed"; "the book's plot is simply incredible")

Sense 2
astonishing, astounding, staggering, stupefying -- (so surprisingly impressive as to stun or overwhelm; "such an enormous response was astonishing"; "an astounding achievement"; "the amount of money required was staggering"; "suffered a staggering defeat"; "the figure inside the boucle dress was stupefying")
       => impressive (vs. unimpressive) -- (making a strong or vivid impression; "an impressive ceremony")