I've encountered the expression the only one difference (as in, "The only one difference between these two cars is the color"), and to my ears it sounds wrong, excessively redundant, but the writer claims it is just for added emphasis.

Are there any good examples of usage for this expression? Google only gives me results of dubious quality.

  • 1
    Note that excessively redundant has a redundancy too! May 7, 2015 at 13:58
  • In general, I wouldn't say it, and it's probably the case I've never heard it. Yet, in a certain context (as always) it could sound okay. But in five decades apparently I've never been privy to that context.
    – user6951
    May 7, 2015 at 14:22
  • Note: it doesn't sound wrong, it sounds unnatural. This is so even though we do employee redundancy in language for the sake of communication.
    – user6951
    May 7, 2015 at 14:25

2 Answers 2


If you want to list multiple adjectives at the same "adjective level" for emphasis, you have to make it clear that they are at the same level, or it sounds like you are violating the rules of adjective order: "The only one difference" sounds just as bad to me as "the green round small lump" or "a big large sizeable dog".

Ordinarily you can repeat the article to make it clear that you're effectively starting the description over:

  • The one, the only, the single, the lone, the solitary difference....
  • It was a big, a large, a sizeable dog....

Otherwise if two different adjectives do actually apply at the same level, you join them with and:

  • The red and green shirt
  • The ragged and torn coat

In the specific case of uniqueness, it is actually common to say "The one and only" as a form of emphasis.


It sounds unnatural and redundant, but at least the meaning remains clear: the only difference.

If I wanted to add emphasis. I'd rather use italics than redundant language.

Aside: Personally, I feel that if a writer tries to add too much "for emphasis", then it actually betrays a lack of confidence in the statement itself. If you feel the need to add multiple exclamation points after a sentence (??) (!!!), then it's probably a signal that the original sentence isn't emphatic enough.

  • The late great Terry Pratchett once said “Multiple exclamation marks are a sure sign of a diseased mind.”
    – AcK
    Jun 18, 2022 at 8:52

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