one by one


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one by one

 and one at a time
the first one, then the next one, then the next one, etc.; each in turn. I have to deal with problems one by one. I can't handle them all at once. Okay, just take things one at a time. The children came into the room one by one.
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one by one

one person or thing following another in order The children filed out of the bus, one by one.
See also: one

one by one

Also, one at a time. Individually in succession, as in The ducklings jumped into the pond one by one, or One at a time they went into the office. Formerly also put as one and one and one after one, this idiom dates from about a.d. 1000.
See also: one

one by one

Individually in succession.
See also: one