Dialogue and Parentheticals
Dialogue is where most screenwriters feel most confident, and where many of the worst habits live. Screenplays are not plays. Film dialogue is not stage dialogue. In a movie, the camera can communicate what a stage actor must say aloud, so film dialogue can be leaner, more oblique, and more reliant on what goes unsaid. Formatting dialogue correctly is only the first step. Writing dialogue that sounds like human speech and carries dramatic weight is the real work.
Character Names
The character cue (the name above each block of dialogue) is always written in ALL CAPS and centered on the page. It must be consistent throughout the entire screenplay. If a character is introduced as DETECTIVE MORALES, they should remain DETECTIVE MORALES (or simply MORALES) in every character cue. Do not switch between MORALES, DETECTIVE, and ANA depending on who is speaking to them.
One exception: if a character's identity changes in a way the audience understands (a reveal, a disguise removed) the character cue can change. A character introduced as MASKED FIGURE might become EVELYN after the mask comes off. But keep these changes rare and clearly motivated by the story.
For minor characters without proper names, use a descriptive identifier: BARTENDER, SECURITY GUARD, PARAMEDIC #1. If they speak more than a few lines and have any personality, give them a proper name. It makes the script easier to read and gives the actor something to hold onto.
Writing Natural Dialogue
Natural-sounding dialogue is not the same as realistic dialogue. Real conversation is full of "um," "uh," repetition, false starts, and stretches of nothing. If you transcribed an actual conversation, it would be unreadable. Screen dialogue is a heightened simulation of how people talk. It sounds natural, but every line is doing work.
Each line of dialogue should advance the plot, reveal character, or create conflict. Ideally, it does two or all three at once. Lines that do none of these (greetings, small talk, pleasantries) should be cut unless they serve a specific dramatic purpose, like establishing that two characters are uncomfortable with each other.
Four lines. No one says "good morning." Every line carries weight: Martin's announcement, Helen's accusation disguised as an observation, Martin's deflection into work, Helen's response that turns the conversation from scheduling into something much darker. The scene is not really about being late for dinner, and the dialogue tells us that without ever stating it.
One of the most common dialogue problems in amateur scripts is "on the nose" writing, where characters say exactly what they mean, exactly when they mean it. Real people rarely do this. They talk around subjects. They hint. They change the subject when they are uncomfortable. They say "I'm fine" when they are not fine.
Each character should have a distinct voice. This does not mean giving everyone a verbal tic or a catchphrase. It means each character's word choice, sentence structure, and rhythm should reflect their background, education, and personality. A literature professor and a mechanic can both express anger, but they will do it with different vocabularies and cadences.
A good test: cover the character cues and read only the dialogue. Can you tell who is speaking? If every character sounds the same, you have a voice problem.
Parentheticals
Parentheticals (sometimes called "wrylies") are brief direction that appear between the character cue and the dialogue. They indicate how a line should be delivered or what the character is doing while speaking. Lowercase, in parentheses, indented between the character name and the dialogue block.
The cardinal rule: use them sparingly. Most dialogue should be understandable from context alone. If you have written the scene well, the actor and director will know how the line should be delivered without you telling them.
Parentheticals are appropriate in three situations:
First, when the delivery contradicts what the words literally mean. If a character says "That's great news" but means the opposite, a parenthetical like "(barely containing fury)" prevents misreading.
Second, when the character is addressing someone specific in a group. "(to Helen)" or "(turning to the judge)" clarifies who is being spoken to when it is not obvious.
Third, when a physical action is interwoven with dialogue and too brief to warrant a separate action line. "(handing her the file)" or "(checking his watch)" can live in a parenthetical rather than breaking the flow of the dialogue exchange.
Overusing parentheticals is one of the most reliable marks of an inexperienced screenwriter. If you find yourself putting a parenthetical on every other line of dialogue, step back and ask whether the context makes the delivery clear on its own. Nine times out of ten, it does.
Dual Dialogue
Dual dialogue is used when two characters speak simultaneously. The two character cues and their dialogue are placed side by side on the page. This is rare in screenwriting, but it can work well for arguments, overlapping conversations, or comedic crosstalk.
In practice, dual dialogue should be used rarely. It is hard for the reader to process two streams of text at once, and on screen, overlapping dialogue requires careful sound mixing. Use it when the overlap communicates chaos, mutual frustration, or the inability of two characters to listen to each other.
Voice Over and Off Screen
When a character speaks but is not physically present in the scene, or when their voice is heard over images rather than in direct conversation, add an extension to the character cue in parentheses right after the character's name.
V.O. (Voice Over)
Voice over is used when a character's voice is heard over the action but they are not speaking within the physical scene. Common uses: narration, internal monologue rendered as speech, phone calls where only one side is heard, and letters or emails being read aloud.
Earl's voice plays over images of the road, but he is not physically in the scene (or may be narrating from a different time). V.O. tells the sound department that this dialogue will be recorded separately and laid over the picture in post-production.
O.S. (Off Screen)
Off screen means the character is physically present in the scene's location but not visible to the camera. They might be in the next room, behind a closed door, or just outside the frame. Unlike V.O., the character's voice is part of the scene's natural audio. They are really there, the camera just is not pointed at them.
Linda is in the house, probably the hallway or bedroom, but not in the bathroom with Owen. The distinction between O.S. and V.O. matters for sound design: O.S. dialogue sounds like it exists in the space (slightly muffled, distant, reflecting off walls), while V.O. is clean and direct, laid onto the soundtrack.
CONT'D (Continued)
The (CONT'D) extension is used when a character's dialogue is interrupted by an action line and then resumes. It signals that the same character is still speaking. The action line represents something happening during the speech, not a pause in conversation.
Subtext
Subtext is what makes dialogue cinematic. It is the unspoken meaning beneath the spoken words, the real conversation happening underneath the surface one. In the best screen dialogue, characters almost never say exactly what they mean. They talk about one thing while communicating something else entirely.
Consider a scene where two former lovers run into each other at a grocery store. They have not spoken in years. If the dialogue is "on the nose," it might go:
That is a scene where the characters are narrating their emotions. It is flat, obvious, and uninteresting. Now consider the same scene with subtext:
The scene is about avocados. Except it is not about avocados at all. It is about intimacy and loss and the impossibility of casual conversation between people who once knew each other completely. James's memory of her habit reveals the depth of their history. Her line about things being "ready" carries weight she did not consciously intend. The action (him noticing her groceries, her switching avocados after he leaves) says what neither character can.
Subtext works because it respects the audience's intelligence. When you spell everything out, the audience has nothing to do. When you leave space between what is said and what is meant, they fill it with their own experience.
Some of the most famous scenes in film history are masterclasses in subtext. The restaurant scene in Heat where a cop and a criminal share coffee. The "Do I amuse you?" scene in Goodfellas where a joke conceals genuine menace. The dinner table sequence in American Beauty where a family eats in silence and the food itself tells the story. Study these scenes. Notice what the characters do not say. That silence is where the real drama lives.
In your own writing, watch for scenes where characters explain their feelings, motivations, or backstory in dialogue. These are almost always opportunities for subtext. Cut the explanation, find a mundane surface conversation, and let the real meaning live underneath.
