Night and day

usgb
adverb

All the time; constantly; with a big difference.

Her life improved night and day when she got a new job.
Visual representation of "night and day" - All the time; constantly; with a big difference

Often appears as...

  • improve night and day
  • change night and day

Usage tips

Idiomatic

Definition 1 of 3
Visual representation of "night and day"
LampPro Tip 1/2

Frequency Intensity

Indicates something happens very often or is vastly improved, suggesting a complete turnaround in a situation.

Illustration for Frequency Intensity
Since studying regularly, his grades have improved night and day.
LampPro Tip 2/2

Not Literal

Used metaphorically to emphasize dramatic change or persistence, not to describe actual time of day.

Illustration for Not Literal
Her mood swings are night and day, you never know what to expect.
Visual representation of the word "Night and day"

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