unannounced

In terms of unannounced drills “there is really very little research out there to guide us in this area.”

Nickerson points out this does not apply to unannounced drills.

He usually arrived unannounced in the middle of the night, wanting a hot meal and hot sex.

On one such occasion, Tyson showed up at her house unannounced.

The truck will travel to a different unannounced location every night at dusk.

You come in here unannounced; I don't know how nor from where.

Unannounced, he strode into the drawing-room, threw himself into an easy-chair, and asked for a glass of iced water.

It was evening when Terrence reached the town unannounced and unheralded with his right arm in a sling.

In every other case He came unannounced and unexpected; but for this meeting there had been a distinct and definite appointment.

Unexpected and unannounced, he strode in to the pickle foundry and grasped the fat arm of the girl who worked next to Warble.