Transcribe a real conversation and read it back, and it sounds nothing like dialogue in a good novel — it's full of false starts, filler words, and people talking past each other without anyone noticing. Realistic dialogue isn't a transcript. It's a careful illusion of one, with the actual mess edited out and replaced by the specific kinds of mess that reveal character.
In life, conversation drifts — people answer the question underneath the question, deflect, or respond to something said three sentences ago. Dialogue that has every character answer cleanly, in order, reads as artificial precisely because it's too organized. Letting one character dodge, deflect, or answer a different question than the one asked instantly makes a scene feel more lived-in.
The most memorable lines of dialogue are rarely about what they're literally about. A conversation about whether to repaint a kitchen can really be about whether a marriage is ending. The skill is letting characters discuss the surface topic completely sincerely while the reader understands the real argument happening underneath — and never having a character announce the subtext out loud.
Dialogue used purely to deliver information to the reader, where characters tell each other things they obviously both already know, is one of the fastest ways to break the illusion of real speech. If two characters need to share a piece of backstory the reader needs, it usually plays better as one character correcting, contradicting, or reacting emotionally to the other's version of events — friction over the facts, not a tidy recitation of them.
Letting characters interrupt each other does more than mimic real speech patterns — it shows power. Who gets interrupted and who never does tells the reader exactly where the authority in a relationship sits, often more efficiently than several paragraphs of description.
The single most reliable dialogue edit is reading the scene aloud. Lines that are grammatically fine but unspeakable in one breath, or that no person would actually say under stress, tend to announce themselves the moment they leave your mouth instead of staying on the page.
Try rewriting one scene of dialogue so that no character directly answers the first question asked of them. IARobo's Writer Chat is a fast way to test how a line of dialogue actually sounds before it goes anywhere near a finished draft.
Want to put this into practice? Open IARobo and try it in the Novel Generator, Poetry Studio or Character Creator.