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one by one

one by one

186 1.4
Things happen one after another, not at the same time
  • idiom
translation icon : uno por uno
  • The teacher asked the students to present their projects one by one in front of the class.
  • remove one by one
  • go one by one
  • begin one by one

All of the sisters just one by one, just die.

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Examples

  • So let's go through these problems kind of one by one that we see out here and fix them.

  • Tim holds the door as, one by one, we rise out of the hole.

    Fiction book (1991)
  • Ultimately, these dead skin cells fall off, usually one by one for healthy skin.

  • And I started looking around and one by one, like people started kind of coming to their feet.

  • We began by introducing ourselves one by one using the message stick.

    Academic text (2013)
  • The other performers step forward one by one to stand at her side.

    Academic text (2001)
  • The Caboclos began to arrive one by one as they were called.

    Academic text (2003)
  • The owls stopped their sounds, and one by one, they all flew away and never came back.

    Academic text (2000)
  • We'll look at those one by one, starting with the mass of the Higgs boson.

  • I watch the boat dock, and the arrivals file quietly one by one from the vessel.

    Academic text (2012)

Synonyms

separately
vsone by one
148 2.1

Each person does it alone rather than together

adds that these distinct occurrences take place one after another
individually
vsone by one
136 2.5

Happening one at a time and not with others

adds the idea that these units occur in a specific sequence
one at a time
vsone by one
107 1.9

Handle each person or thing in turn, not all at once

focuses more on the strict successive order between items
step-by-step
vsone by one
23 2.8

Done in separate parts, each finished before the next

is closer to simple individual occurrence rather than staged process
piecemeal
vsone by one
17 7.0

Happening in small parts over time instead of all at once

describes simpler successive acts rather than broken work stages
one after the other
vsone by one
17 2.0

With no pause between actions or events

is similar but used more to show individual handling in order
one after another
vsone by one
17 2.3

Things follow each other without a break

focuses more on doing things individually rather than just order
consecutively
vsone by one
9 4.1

Happening one after another without a break

is more about doing items individually, not only uninterrupted succession
sequentially
vsone by one
9 4.5

Things happen one after the other in a fixed order

is narrower, stressing individual handling rather than formal ordering
on an individual basis
vsone by one
  • Formal
7 4.4

Separately for each person or case

stresses that these individual considerations happen in a set order
singly
vsone by one
5 4.6

One at a time rather than in a group

emphasizes a clear order in which items follow one another
by the piece
vsone by one
1 3.4

People make or sell items one at a time instead of in bulk

is used when items appear or happen in a strict order
severally
vsone by one
1 8.2

Each person or thing on its own, not as a group

highlights that those individual actions follow each other in time
bit-by-bit
vsone by one
3.5

Happens slowly, a little at a time

describes immediate individual actions rather than slow gradual change

Antonyms

1.0

In the same place or group with other people

43 2.1

Happening at the same time

How Simultaneous

all at once
13 3.0
together
1.0
one at a time
107 1.9
one by one
186 1.4

Surface Forms

one by one positive
one-by-one positive

Morphology

one + by + one

The meaning 'one after another' is directly and compositionally derived from 'one' (a single unit) combined with 'by' indicating distribution or sequence, so a learner who knows the constituents can infer the phrase. This per-unit/serial pattern is cross-linguistically common and follows a transparent English construction, making it immediately comprehensible to a B1 learner.

Etymology

One by one paints a simple picture: imagine people entering a room, each one coming through the door after the last person. So it means 'one after another', not all at the same time.