overnight

overnight — adjective

1. planned for one night, or happening between evening and morning.

1.形容詞B1
釋義

planned for one night, or happening between evening and morning.

例句

We booked an overnight train from Taipei to Tainan.

collocation: overnight train / bus / flight

The clinic offers overnight care after minor surgery.

同義詞
  • nighttime

    focuses on the part of the day, not always a one-night stay

  • night-long

    emphasizes lasting through the whole night

  • all-night

    stronger than overnight and usually means continuing until morning

反義詞
  • daytime

    happening during the day instead of at night

用法筆記

Often used before nouns like train, bag, guest, or care. Distinguish from adjective/2 RAPID CHANGE, which is about speed of change rather than time at night.

常見錯誤

We packed an all-night bag for the hotel.
We packed an overnight bag for the hotel.
💡'all-night' means lasting the whole night; 'overnight' here means for a one-night stay.

2. appearing or changing in a very short time, with no warning.

2.形容詞C2
釋義

appearing or changing in a very short time, with no warning.

例句

The singer became an overnight star after one TV interview.

collocation: overnight success / star

Overnight popularity brought the app more users than expected.

同義詞
  • sudden

    broader and does not suggest change within only one night

  • rapid

    more neutral and often used for measurable speed

  • instant

    stronger, suggesting almost no delay at all

反義詞
  • gradual

    describes change that happens step by step

用法筆記

Most often comes before nouns such as success, fame, popularity, or rise. Distinguish from adverb/2 VERY QUICKLY: this adjective modifies a noun, while the adverb modifies the whole event.

overnight — verb

overnight — adverb

overnight — noun