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I'm interested in finding out two things:

  1. Why is sensical not a valid antonym for nonsensical?
  2. Is there an antonym of nonsensical that can be used instead? I haven't found any in dictionary searches.
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None of the suggestions have quite the 'silly tone', if you will, that I enjoy in nonsensical and sensical; however, I've gone with meaningful as the best alternate. –  matadur Aug 22 '11 at 17:17

4 Answers 4

up vote 5 down vote accepted
  1. You might get some insight from this...I am suggesting that "nonsensical" is an unpaired word like "unwittingly".
  2. Possible antonyms:
    • sensible
    • coherent
    • logical
    • intelligible
    • meaningful
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Meaningful meets my need perfectly, thanks! –  matadur Aug 22 '11 at 13:11

Sensical has not yet become an "official" word in the English language, which would be why you can't use it. Nonsense is a word, therefore nonsensical can used to describe something of nonsense. However, sense has different meanings and doesn't have an adjective for something of sense. English language speakers generally do not use sense as an antonym of nonsense. Possible antonyms of nonsensical include logical, rational, or reasonable.

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I think you'll find we do use sense as the antonym of nonsense. –  Matt E. Эллен Aug 20 '11 at 8:41
I suppose that could be a cultural preference. In America, we say something makes sense, but not that it is sense. However we do say something is nonsense. –  Xandria Aug 20 '11 at 19:47

Depending on the context, meaningful, rational, sensible, relevant, pertinent, judicious, could be acceptable antonyms of "nonsensical".

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Thanks, I went with meaningful! –  matadur Aug 22 '11 at 17:14

I've always considered nonsensical differs from nonsense in that the former is ordinarily applied to things which are either expected to make sense, or which superficially appear to but in fact don't. Whereas we don't necessarilly expect much from plain old nonsense.

So I suggest cogent (clear, logical, convincing) is a good antonym in many contexts.

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That's the definition I was looking for - something that appears to and does make sense. Cogent is a fitting antonym, but meaningful fit my sentence better. Thanks! –  matadur Aug 22 '11 at 17:13
@matadur: If you had a specific sentence in mind where you wanted a word to "fit", you should have put that in the question. Without proper context, we will all struggle to find the most suitable word, and future visitors will be less likely to find either the question or answers useful. –  FumbleFingers Aug 22 '11 at 17:28

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