surprise party

noun

a party or celebration planned for someone as a surprise.
something that surprises someone.

Origin of surprise party

First recorded in 1835–45

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for surprise party

Historical Examples of surprise party

I want to give her a surprise-party from all her neighbors, and I want to give it now.
The Atlantic Monthly, Volume 15, No. 87, January, 1865
Various
To-night, Ruby, you come up to us for supper—we bring her a surprise-party.
Just Around the Corner
Fannie Hurst
A surprise-party of redstarts breaks into full play around him.
Fisherman's Luck
Henry van Dyke
They were on their way with a band of music to give some popular citizen a surprise-party.
The Atlantic Monthly, Volume 14, No. 86, December, 1864
Various
Teacher nodded, though at that particular moment she had not the vaguest idea what the surprise-party was to be.
Dixie Martin
Grace May North