1.
advance notice; prior announcement
informing someone about something before it happens
予告なしに訪問された。
They visited without advance notice.
一週間前に予告してください。
Please give us a week's notice.
犯人は犯行を予告していた。
The criminal had announced the crime in advance.
2.
trailer; preview (for movies/shows)
a short promotional video showing upcoming content
映画の予告編を見た。
I watched the movie trailer.
次回予告が楽しみだ。
I look forward to the preview of the next episode.
予告だけで内容がわかってしまった。
I could tell the whole story just from the trailer.
FORMATION:
予 (beforehand) + 告 (announce) → announce beforehand
VERB FORM:
予告する (to give advance notice, to announce)
RELATED COMPOUNDS:
- 予告編 (trailer, preview)
- 次回予告 (preview of next episode)
- 予告犯 (crime announced in advance)
- 予告なし (without notice)
RELATED WORDS:
- 告知 (notification, announcement)
- 通知 (notification)
- 事前連絡 (advance contact)
- トレーラー (trailer - loanword)
USAGE:
予告なし or 予告なしに (without notice/warning) is a common phrase used when something happens unexpectedly or without prior communication.