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 astounded

1 sense of astounded

Sense 1
amazed, astonied, astonished, astounded, stunned -- (filled with the emotional impact of overwhelming surprise or shock; "an amazed audience gave the magician a standing ovation"; "I stood enthralled, astonished by the vastness and majesty of the cathedral"; "astounded viewers wept at the pictures from the Oklahoma City bombing"; "stood in stunned silence"; "stunned scientists found not one but at least three viruses")

INDIRECT (VIA surprised) -> unsurprised, not surprised -- (not surprised or expressing surprise; "that unsuprised obstinate look on his face")

Similarity of adj astounded

1 sense of astounded

Sense 1
amazed, astonied, astonished, astounded, stunned -- (filled with the emotional impact of overwhelming surprise or shock; "an amazed audience gave the magician a standing ovation"; "I stood enthralled, astonished by the vastness and majesty of the cathedral"; "astounded viewers wept at the pictures from the Oklahoma City bombing"; "stood in stunned silence"; "stunned scientists found not one but at least three viruses")
       => surprised (vs. unsurprised) -- (taken unawares or suddenly and feeling wonder or astonishment; "surprised by her student's ingenuity"; "surprised that he remembered my name"; "a surprised expression")