Never use a verb other than "said" to carry dialogue... I once noticed Mary McCarthy ending a line of dialogue with "she asseverated" and had to stop reading and go to the dictionary.
James Blish told me I had the worst case of "said bookism" (that is, using every word except said to indicate dialogue). He told me to limit the verbs to said, replied, asked, and answered and only when absolutely necessary.
Don't be scared of 'said.' Writers sometimes go looking for alternatives because they worry that 'he said' and 'she said' will feel repetitive if they're used all the time, but I swear, they won't.
Never use a verb other than ‘said’ to carry dialogue.
In dialogue, make sure that your attributives do not awkwardly interrupt a spoken sentence. Place them where the breath would come naturally in speech-that is, where the speaker would pause for emphasis, or take a breath. The best test for locating an attributive is to speak the sentence aloud.
I can't have composite characters. I can't attribute dialogue to someone based simply on my memory and not based on notes taken at the time that the words were spoken.
I think of it as the lasagna approach to writing because I'm always adding layers. I'll sometimes do it layer by layer, with dialogue, attribution, action, objects in the scene, setting... It can be sometimes that delineated.
The line of dialogue belongs to the character; the verb is the writer sticking his nose in.