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.
All I ask is that you do as well as you can, and remember that, while to write adverbs is human, to write he said or she said is divine.
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.
I read one book where the characters never said anything; instead, they spent all their time grunting and bleating and hissing and cooing and growling and chirping and... It was like a menagerie in there. After a while, I wasn't even taking in the rest of the book, because that was all I could see: the dialogue tags.
Many novice writers try to avoid using 'said' by substituting synonyms: 'he uttered,' 'she murmured,' 'he questioned.' It's true that any word repeated too often becomes monotonous, but substitutions for 'said' can be worse than its repetition.
I still haven't quite caught on to the idea of writing without dialogue. I like writing dialogue, and there's nothing wrong with dialogue in movies.