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once and again

adverb

Definition of once and again 

1a : once and once more spoke to her once and again

b : two or more times have heard it said once and again

2 : now and again : from time to time : occasionally, sometimes once and again this sort of thing will happen

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Dictionary Entries near once and again

once

once-accented octave

once again/more

once and again

once bitten, twice shy

once-born

once in a blue moon

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