having self-possession upset; thrown into confusion;
"the hecklers pelted the discombobulated speaker with anything that came to hand"
"looked at each other dumbly, quite disconcerted"
- He is disconcerted to find the other guest formally dress.
- Henry was disconcerted to find that he had come to school without combing his hair.
- She was disconcerted to see that she was being watched.
- He was disconcerted to find the other guests formally dressed.