overnight

overnight — adjective

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

1.adjectiveB1
Definition

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

Example

We booked an overnight train from Taipei to Tainan.

collocation: overnight train / bus / flight

The clinic offers overnight care after minor surgery.

Common collocations
  • overnight train
  • overnight flight
  • overnight guest
  • overnight care
Synonyms
  • 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

Antonyms
  • daytime

    happening during the day instead of at night

Usage Note

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.

Common Mistakes

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.adjectiveC2
Definition

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

Example

The singer became an overnight star after one TV interview.

collocation: overnight success / star

Overnight popularity brought the app more users than expected.

Common collocations
  • overnight star
  • overnight success
  • overnight fame
  • overnight rise
Synonyms
  • 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

Antonyms
  • gradual

    describes change that happens step by step

Usage Note

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

Synonym discussion

Sense: adjective/1

For adjective/1, overnight is useful when something is for one night or happens during the night: an overnight train, an overnight guest, overnight care. Nighttime is broader and simply places something in the night part of the day, as in nighttime traffic. All-night is stronger and stresses that something continues until morning, such as an all-night study session. Nightly usually means happening every night, so a nightly show repeats, but an overnight stay happens once. Nocturnal is mostly used for animals or habits that are active at night, so it sounds more scientific. A hotel can offer overnight parking, but not nocturnal parking. An owl is nocturnal, not overnight.

nighttimeall-nightnightlynocturnal

Etymology

Old EnglishEnglish

Overnight was formed inside English from over and night. In older use, over could mean through a period of time, so overnight first meant through the night or for one night. From that basic time idea, English later built the modern uses about staying one night, sending something for next-day arrival, and changes that seem to happen within a single night.