He had arrived unexpectedly and they were delighted to see him.
He came to my house unexpectedly
I was very happy when my brother came to visit unexpectedly this weekend.
He took a week off when his mother died unexpectedly last year.
He had no illness, so Harvey's death came unexpectedly. Unexpectedly, the couch exploded. It was an unexpectedly brief encounter. Unexpectedly, the monkey counted the beans correctly.
When two more guests unexpectedly arrived to the dinner party we had to reapportion the prepared food.
She was unexpectedly shanghaied into joining the team for the project.
"He arrived unheralded" - it means unexpectedly.
Fred unexpectedly blurted out our intentions to hold a surprise party.
Example sentence - We unexpectedly found an arrowhead in the wheat field.
The root word for unexpectedly is "expect."
She showed a great deal of disdain for him when she hung up the phone unexpectedly.
Surprise would be the world. It is unexpectedly sudden.