stunned /stʌnd/ adjective
too surprised or shocked to speak:
He looked completely stunned.
The audience sat in stunned silence.

[TahlilGaran] Dictionary of Contemporary English ▲

stunned
adj.
VERBS appear, be, feel, look, seem, sit, sound, stand Morton stood stunned, unable to believe his ears.
leave sb Leaving them all stunned, she walked out of the bar.
ADV. deeply | absolutely, completely, quite | almost | a bit, a little, slightly, somewhat | briefly, momentarily
PREP. at They seemed stunned at his outburst.
by She was a bit stunned by the news.
with stunned with grief

[TahlilGaran] Collocations Dictionary ▲

shocked feeling surprised and upset by something very unexpected and unpleasant:
I was shocked when I heard what had happened.
We are all deeply shocked by his death.
They seemed shocked at the suggestion.
shaken shocked because something very unpleasant or frightening has happened – used when the experience has made you feel weak or nervous:
He was badly shaken by the incident.
She looked shaken by the news.
be in a state of shock to feel shocked and unable to do normal things:
He was uninjured but in a state of shock after the attack.
horrified very shocked because something unpleasant or frightening has happened:
She was horrified to discover that her son had been taking drugs.
There was a horrified look on his face.
appalled very shocked because you think something is very bad:
I was appalled by his behaviour.
Emma was appalled at how he’d treated his mother.
traumatized so badly shocked that you are affected for a very long time:
The children were severely traumatized by years of civil war.
outraged extremely shocked and angry:
The victim’s family were outraged at the short jail sentence.
devastated extremely shocked and sad – used when someone is extremely badly affected by something:
Petra was absolutely devastated by the death of her daughter.
stunned so shocked that you are unable to do or say anything immediately:
He had been stunned by the news of his friend’s sudden death.
dazed very shocked and unable to think clearly:
He emerged from the wreck of the car, dazed but unhurt.
aghast /əˈɡɑːst $ əˈɡæst/ [not before noun] written shocked:
She looked aghast at the suggestion.

[TahlilGaran] English Thesaurus ▲

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 ▲