The creator of Raylan Givens, author Elmore Leonard, listed his rules to ‘show, not tell’ for the Times in 2001. Well worth a read.

3. Never use a verb other than ”said” to carry dialogue.

The line of dialogue belongs to the character; the verb is the writer sticking his nose in. But said is far less intrusive than grumbled, gasped, cautioned, lied. I once noticed Mary McCarthy ending a line of dialogue with ”she asseverated,” and had to stop reading to get the dictionary.

8. Avoid detailed descriptions of characters.

Which Steinbeck covered. In Ernest Hemingway’s ”Hills Like White Elephants” what do the ”American and the girl with him” look like? ”She had taken off her hat and put it on the table.” That’s the only reference to a physical description in the story, and yet we see the couple and know them by their tones of voice, with not one adverb in sight.

My most important rule is one that sums up the 10.

If it sounds like writing, I rewrite it.

Or, if proper usage gets in the way, it may have to go. I can’t allow what we learned in English composition to disrupt the sound and rhythm of the narrative. It’s my attempt to remain invisible, not distract the reader from the story with obvious writing. (Joseph Conrad said something about words getting in the way of what you want to say.)