Astounded is a word that expresses a feeling of shock or surprise. Other synonyms for astounded include amazed, astonished, shocked, stunned, dumbfounded, flabbergasted, and taken aback. Each of these words carries a different connotation and may be used in different contexts. For instance, shocked may suggest a sudden or unexpected blow, while amazed may imply a sense of wonder or admiration. To be dumbfounded is to be left speechless, while stunned suggests a temporary paralysis of the senses. In summary, each synonym for astounded has a slightly different nuance, so it is important to choose the right one to convey the intended meaning.