Unannounced

Synonyms of unannounced

• unexpected
• surprise
• impromptu

Antonyms of unannounced

• planned
• scheduled
• announced

Collocations of unannounced

visit

Frequency: 70 %

He made an unannounced visit to her house.

arrival

Frequency: 60 %

The arrival of the unannounced guest surprised everyone.

appearance

Frequency: 50 %

Her unannounced appearance at the party caused quite a stir.

inspection

Frequency: 45 %

The unannounced inspection caught the employees off guard.

audit

Frequency: 35 %

The company was subjected to an unannounced audit by the regulatory authorities.

Idiomatic Expressions for unannounced

• Phrase: Show up unannounced
  Meaning: To arrive at a place without prior notice or warning
  Usage: He showed up unannounced at the party and caught everyone off guard.