shell-shocked

US /ˈʃel.ʃɑkt/
UK /ˈʃel.ʃɑkt/
"shell-shocked" picture
1.

suffering from post-traumatic stress disorder as a result of combat experience

:
The veteran returned home shell-shocked from the war.
His eyes had a distant, shell-shocked look.
2.

extremely surprised or confused by something unexpected

:
She was completely shell-shocked by the sudden news of his resignation.
The audience was left shell-shocked by the twist ending of the movie.