in Editing
Dialogue tags, and why "said" disappears on the page
Readers barely register the word "said", which is exactly why it works. Most alternatives draw attention to themselves.
Many writers are taught early that "said" is boring, and that dialogue comes alive with "exclaimed", "retorted", "hissed" and "opined". Most editors take the opposite view. The reason has less to do with taste than with how people read.
Why "said" is nearly invisible
When readers meet a line of dialogue, their attention is on what is being said and who is saying it. A tag is there to answer the second question. "Said" does that and nothing else. Because it is so common, readers process it almost without noticing, the way they process punctuation. It does its job and gets out of the way.
"Asked" works in the same way for questions. Between them, they cover most dialogue.
An unusual tag does the opposite. "She expostulated" makes the reader stop and look at the verb. That is not always bad, but it moves attention from the speech to the tag, and on a page with many such tags, the reader starts noticing the machinery.
When the tag does the dialogue's work
There is a subtler problem. A tag like "he snarled" or "she said angrily" often exists because the line of dialogue does not convey the emotion by itself. The tag is patching the line.
Take the line "I don't care what you think," she snapped. Remove "she snapped" and the line may already carry the snap. If it does, the tag is redundant. If it does not, the fix belongs in the dialogue, or in what surrounds it, rather than in a stronger verb.
Some tags also describe things that cannot be done while speaking. A character cannot easily "smile" or "laugh" a whole sentence. Many style guides treat these as action beats rather than tags, which leads to the next point.
Action beats instead of tags
Often the best tag is none at all. An action beat, a short sentence of movement or gesture next to the dialogue, can identify the speaker and add information at once.
"I'm fine." Priya put the kettle on without looking at him.
We know who spoke, and we have learned something about how she feels without being told. Beats are useful but can be overused; if every line of dialogue comes with a gesture, characters start to seem restless. A mix of "said", beats and untagged lines usually reads most naturally.
When to leave tags out
In a two-person exchange, once the rhythm is established, readers can follow alternating lines without tags for some time. But not indefinitely. Readers lose count after a few lines, and having to count back up the page to work out who is speaking is a small frustration that adds up. A tag every few lines keeps them oriented.
Read a dialogue-heavy scene and highlight every tag that is not "said" or "asked". For each one, ask whether the line would be clearer or weaker without it. Often you will find the dialogue was stronger than the tag gave it credit for.