Synonyms of the word 
ASTOUNDED → AMAZED - ASTONIED - ASTONISHED - STUNNED - SURPRISED
astounded
- adj. surprised, amazed, astonished or bewildered.
amazed
- adj. Astonished; confounded with fear, surprise, or wonder; greatly surprised. The following adposition may…
- v. simple past tense and past participle of amaze.
astonied
- v. simple past tense and past participle of astony.
- adj. (archaic) In shock or confusion; bewildered.
astonished
- adj. Amazed; surprised.
- v. simple past tense and past participle of astonish.
stunned
- adj. Unable to act or respond; dazed; shocked.
- v. simple past tense and past participle of stun.
surprised
- adj. Caused to feel surprise, amazement or wonder, or showing an emotion due to an unexpected event.
- v. simple past tense and past participle of surprise.
If you are interested in words, visit the following sites :
- wiktionary.org/astounded For complete definition of a word
- 1word.ws/astounded to play with words, suffixs, prefixs, etc.