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by the day

by the day

24 2.3
For each day
  • idiom
translation icon : por día
  • You're getting older by the day.
  • growing by the day
  • more by the day

I also learned that this is becoming more true by the day.

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Examples

  • You pay by the day or by the week?

  • Yes, they're getting worse by the day, and so is their base, right along with them.

    Blog text (7)
  • It's growing larger by the day.

  • We have to deal with trends that change not by the year, but by the week, by the day, even by the hour.

  • And if you pay by the day, it's due at noon.

  • The company charges either by the day, the ton, or works on a contract.

    Academic text (1997)
  • My mother's getting weaker by the day.

  • Many of these schools are improving their virtual libraries by the day.

    Academic text (2007)
  • Clearly, he was growing poorer by the day, not only in the state of his finances but in spirit.

    Fiction book (1994)
  • The project is progressing significantly by the day, making it easier to meet the deadline.

Synonyms

daily
vsby the day
1.0

Happening or done every day

is used as a fixed phrase to express a time rate
day-to-day basis
vsby the day
20 2.5

Part of your normal routine that happens every day

is a neutral time phrase focusing on frequency rather than routine
per diem
vsby the day
1 6.9

For each day

is a common everyday phrase rather than a formal term

How Often

hourly
11 1.0
by the day
24 2.3
weekly
323 1.0

Surface Forms

by the day positive

Morphology

by + the + day

The meaning 'for each day' is directly derivable from combining 'by' (marking rate or unit) with 'day' (a time unit), with 'the' serving as a definite article. This per-unit construction is cross-linguistically common and follows standard English patterns (e.g., 'by the hour', 'by the week'), so a B1 learner who knows the parts will readily infer the MWE's meaning.

Etymology

By the day comes from the simple idea of paying or counting one day at a time; imagine a hotel putting a price tag on each calendar day, and that's why it now means 'for each day' or 'on a daily basis'.