I'm a native speaker of English, and I don't know how many times I've wanted to say "happilier" instead of "more happily", or "happiliest" instead of "most happily". Is there any record of such comparative/superlative adverbs (-lier, -liest) being used, even if it is in weird experimental literature?

Interesting problems arise with words already ending in "-ly", e.g.:

  • sillily: in a silly manner
  • sillilier: in a sillier manner
  • sillilily: in a manner suggesting a silly manner (double-adverb)
  • sillililiest: in a manner suggesting the silliest manner possible

(Typeset in fixed-width not because I think it's right, but because otherwise it's impossible to read "sillililiest".)

  • 1
    Sillily is a word: thefreedictionary.com/Sillily
    – Kosmonaut
    Commented Nov 9, 2010 at 19:40
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    Semantically, I am not sure what a double-adverb would mean, but I don't know why it should mean "in a manner suggesting [adverb]".
    – Kosmonaut
    Commented Nov 9, 2010 at 19:51
  • @Kosmonaut: Oh, have some fun with it. What else would it mean?
    – Jon Purdy
    Commented Nov 10, 2010 at 7:47
  • Actually, the reason I was saying that I don't know what a double-adverb would mean, was because I was trying to speculate as to whether someone would have used it before (since I've never seen it, in any case). Sillilier is not a word, but in the right situation, the intended meaning is clear ("more sillily"); so, I could picture someone using it humorously. For the double-adverb ones, I can't come up with any possible meaning for it, so it is much more unlikely to have been used, even for humorous effect.
    – Kosmonaut
    Commented Nov 10, 2010 at 15:16

1 Answer 1


As far as your silly experiment, your problem arises in that ly is used to convert an adjective into an adverb, with the definition "in a [adjective] manner".

Thus, sillily is a word ("in a silly manner")

As far as "in a sillier manner", there are two rules for forming a superlative from an adverb. If the adverb was formed by adding ly to an adjective, you must use most or more.

"In a sillier manner" -> more sillily

"In the silliest manner" -> most sillily

If an adverb is the same as the adjective form, you can make a superlative using er or est

"In a faster manner" -> faster (ex. "He ran faster")

"In the fastest manner" -> fastest (ex. "He ran fastest")

As for sillilily, this is entirely nonsense. The reason is that our ly rule only applies to adjectives. You can not apply ly to an adverb and expect a "double adverb". An attempt to apply the rule directly would result in:

"In a sillily manner"

Notice that since manner is a noun, it should not have an adverb describing it. In your examples the word "suggesting" came out of nowhere. Nothing in the grammatical construction implied that there was suggestion.

In the case of sillililiest we encounter both of the above problems simultaneously. First, you attempted to make an adverb from an adverb by adding ly

sillily -> sillilily

Then you attempted to apply est or er to make a superlative

sillilily -> sillililiest

Both of these can not be done. The first because ly only applies to adjectives, not adverbs. The second because to make a superlative from an adverb which was formed by adding ly, you must use 'more' or 'most'. Again- you introduced the word "suggesting" which came out of nowhere.

  • Would someone mind explaining the down vote? I thought the explanation was quite clear. ly turns adjectives into adverbs but cannot be used on adverbs. Then a superlative is formed from an adverb in one of two ways depending on if it's an adjective+ly adverb or an adverb in its own right.
    – stevendesu
    Commented Nov 14, 2010 at 19:45
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    +1 for a good analysis. Bad form from the down-voter who didn't say why so the answer could be improved upon by the author.
    – Gary
    Commented Nov 18, 2010 at 20:15

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