as‧ton‧ished /əˈstɒnɪʃt $ əˈstɑː-/ adjective
very surprised about something Synonym : amazed
astonished to see/find/hear/learn etc
We were astonished to find the temple still in its original condition.
astonished by/at
I was astonished by the result.
astonished (that)
I’m astonished that you should even think such a thing!

[TahlilGaran] Dictionary of Contemporary English ▲

astonished
adj.
VERBS be, look, seem, sound
ADV. absolutely, quite
PREP. at She was quite astonished at his rudeness.
by He was astonished by the amount of junk in the house.

[TahlilGaran] Collocations Dictionary ▲

surprised having the feeling you get when something happens that you did not expect:
I was surprised to see her again so soon.
I’m really surprised that he remembered my birthday.
Nobody was surprised when they split up.
a surprised expression
amazed [not before noun] extremely surprised, especially by something good or by something that seems hard to believe:
I’m amazed that he survived.
You’ll be amazed when you see the difference.
astonished extremely surprised:
He was astonished by how much she had changed.
an astonished look
astounded extremely surprised or shocked. Astounded sounds a little more formal and a little stronger than astonished:
She was astounded by how much it cost.
staggered/flabbergasted/dumbfounded [not before noun] extremely surprised or shocked:
‘What?’ I said, utterly staggered by his answer.
She just sat there looking flabbergasted.
stunned so surprised that you do not know what to do or say:
I was too stunned to protest.
Everyone seemed stunned by his outburst.
They listened in stunned silence.
speechless so surprised that you cannot speak:
I was speechless when I heard that I’d won.
taken aback [not before noun] surprised by what someone says or does, so that you are not sure how to react:
I was a little taken aback by her question.
Sharpe was somewhat taken aback by the girl 's directness.
nonplussed /nɒnˈplʌst $ nɑːn-/ formal surprised and a little confused:
She was nonplussed by such an odd question.
gobsmacked [not before noun] British English informal extremely surprised – a very informal use:
I was absolutely gobsmacked when they told me I had passed.

[TahlilGaran] English Thesaurus ▲