Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “one by one”

one by one

B2 separately, one after the other: One by one the old buildings in the city have been demolished and replaced with modern tower blocks. They entered the room one by one.Simultaneous and consecutiveOrder and sequence
(Definition of one by one from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Definitions of “one by one” in other dictionaries

Translations of “one by one”

Word of the Day

closeness

the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More