unannounced in a sentence

Examples

1. I call this unannounced, unexplained action " cold kicking ".
2. Derek shows up at her house, unannounced, to explain.
3. It is currently working on an unannounced Unreal Engine 4 game.
4. Arriving unannounced in his office she unleashes a stuttering torrent of frustrations.
5. Several other better-known artists are expected to make unannounced appearances.
6. The unannounced visits initially put fear in the principals, he said.
7. "I don't have a problem with unannounced testing.
8. John Smith appeared, unannounced, to pay his respects.
9. And both pride themselves in showing up unannounced and uncultivated.
10. But the league has no unannounced testing for illegal drugs.