An adjective is that which tells something about a noun or a pronoun. And an adverb is that which describes a verb. However, I find sentences where an adjective is used to describe a verb as follows:

  1. He writes slower than me.
  2. He writes slower than I do.

Are the above sentences correct?

  • Another example; "Tom picked it up quicker than I thought he would.", which I think should be "Tom picked it up more quickly than I thought he would." Sep 5, 2018 at 7:14
  • I think both of the sentences should better be like "He writes more slowly than I do." Sep 5, 2018 at 7:20
  • 1
    Slower is a perfectly fine adverb. It's an error to think that the more cumbersome more slowly somehow works better or is more valid. Notice how better is also an adverb. It's alwaysly wrong to force all adverbs to end in -ly. ;-)
    – tchrist
    Sep 5, 2018 at 12:09

1 Answer 1


Yes, your sentences are absolutely correct. Slow in this case is not an adjective. It's an adverb. But to be even more precise, it is something called an irregular adverb. Irregular adverbs are not formed by adding -ly to the end of a word to make it an adverb as regular adverbs do. Instead, they follow their own irregular patterns. Some common examples of irregular adverbs include the adverbs hard (the adverb hardly is an adverb that means something completely different, by the way), fast and wrong, just to name a few:

If you want to become a fluent English speaker, you have to work hard on your English.

He runs faster than me.

Am I doing it wrong?

Notice that the adjective hard and adverb hard are actually two different words. Hard as an adjective means solid or firm. As an adverb, it means with a great deal of effort. The exact same thing is going on with the adjective slow and the adverb slow. Slow as an adjective means not quick. As an adverb, it means happening at a slow pace and is completely interchangeable with the regular adverb slowly:

He writes slower than me.

He writes more slowly than me.

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