An accident or shock can leave someone feeling stunned. They might look confused and disoriented.
When something unexpected happens, people often say they were "stunned". Imagine being at work and your boss tells you that the company is closing down tomorrow - it's a lot to take in! You'd probably feel stunned and not know what to do next. Or think of someone who sees a huge traffic accident on their way home from work and is shocked into silence for a few minutes, feeling stunned by what they've just seen. It's like your mind needs time to catch up with the news and figure out how it affects you.
Unable to act or respond; dazed; shocked.
Example: completely stunned
