Bookshaper is in early access — subscriptions opening soon.

What Passive Voice Is

In active voice, the subject of the sentence performs the action. The detective interviewed the suspect. The storm destroyed the bridge. Maria opened the letter. The subject acts, the verb describes the action, and the object receives it. This is the default sentence structure in English and the one readers process most quickly.

In passive voice, the subject of the sentence receives the action instead of performing it. The suspect was interviewed by the detective. The bridge was destroyed by the storm. The letter was opened by Maria. The grammatical subject is no longer the actor but the thing acted upon.

You can identify passive voice by looking for a form of the verb to be (was, were, is, are, been, being) followed by a past participle (usually a verb ending in -ed or -en). If you can add the phrase by zombies after the verb and the sentence still makes grammatical sense, it is passive. The letter was opened by zombies. The bridge was destroyed by zombies. Both work, confirming the passive construction.

Passive voice is not a grammatical error. It is a legitimate construction with specific uses. The goal is not to eliminate it entirely but to use it deliberately rather than by default.

Why Passive Voice Weakens Prose

Passive voice removes the actor from the most prominent position in the sentence. When you write the door was slammed, the reader processes the door and the slamming but has to work harder to identify who did it, if the agent is mentioned at all. This extra processing slows reading speed and weakens the sense of immediacy that strong fiction depends on.

In narrative prose, passive voice distances the reader from the action. Active voice puts the character at the center of every sentence, creating a feeling of direct experience. Passive voice pushes the character to the margins or removes them entirely. Over the course of many paragraphs, this distance accumulates and the prose begins to feel reported rather than lived.

Passive voice also tends to produce longer, wordier sentences. The report was written by the analyst over the weekend is eleven words. The analyst wrote the report over the weekend is nine words and is more direct. In isolation the difference is trivial, but across a full manuscript, habitual passive voice adds thousands of unnecessary words that dilute the prose.

  • Removes character agency by shifting the actor out of the subject position.
  • Slows reading pace by requiring the reader to reconstruct who performed the action.
  • Creates emotional distance between the reader and the events of the story.
  • Produces wordier sentences that dilute impact over the length of a manuscript.
  • Obscures cause and effect by separating the action from its agent.

When Passive Voice Is Appropriate

Despite its reputation, passive voice is sometimes the strongest choice. The key is understanding the specific effects it creates so you can deploy it intentionally rather than falling into it by habit.

In mystery and suspense, passive voice can deliberately hide the agent of an action. The victim was poisoned sometime before midnight conceals the killer's identity. Converting this to active voice would require naming the poisoner, which the story is not ready to reveal. Here, passive voice is not weak writing but strategic withholding.

Passive voice also works when the receiver of the action is more important than the performer. The city was devastated by the earthquake puts the city, and its suffering, at the center of the sentence. The earthquake devastated the city centers the earthquake. If your scene is about the aftermath and the human cost, the passive construction may serve the emotional focus better.

Scientific, procedural, and bureaucratic contexts within fiction may also call for passive voice. A forensic report, a military briefing, or a legal document within your story should sound like those genres of writing, and those genres rely heavily on passive constructions. Using active voice in a lab report scene would sound unnatural.

Converting Passive to Active

The conversion process has three steps. First, identify the true actor: who or what is actually performing the action? In the sentence the window was broken, ask yourself who broke it. Second, make that actor the subject of the sentence. Third, restructure the verb from its passive form to its active form.

Sometimes the actor is stated in a by phrase: the letter was delivered by the courier becomes the courier delivered the letter. Sometimes the actor is implied but absent: mistakes were made becomes the team made mistakes, or better yet, a specific character name. Sometimes the best revision is not just a grammatical flip but a complete rewrite that adds specificity and energy.

Not every passive sentence needs conversion. Before flipping a sentence to active voice, ask whether the passive construction is serving a purpose. If it is hiding an agent deliberately, emphasizing the receiver, or matching a genre voice, leave it alone.

Step 1: Find the actor
Ask who is performing the action. If the sentence does not name an actor, decide who it should be. Vague passive constructions like it was decided or the plan was changed almost always improve when you identify the person making the decision or the change.
Step 2: Make the actor the subject
Move the actor to the front of the sentence. This immediately creates forward momentum because the reader knows who is doing what before they learn what was done.
Step 3: Simplify the verb
Replace the was/were + past participle construction with a simple active verb. The report was completed by Sarah becomes Sarah completed the report. Look for opportunities to choose a more vivid verb at the same time: Sarah finished the report, Sarah filed the report, Sarah submitted the report.

Passive Voice in Bookshaper

Bookshaper's Proofread Mode includes a dedicated passive-voice grammar category that scans your prose for passive constructions. Each instance is flagged inline with the specific sentence highlighted, making it easy to evaluate whether the passive voice is serving a purpose or weakening the prose.

The system does not treat every passive sentence as an error. It distinguishes between passive constructions in narrative prose, where they typically weaken impact, and passive constructions in dialogue or genre-appropriate contexts, where they may be intentional. Severity levels help you prioritize: high-severity flags mark passive constructions in action scenes and climactic moments where active voice would significantly strengthen the writing, while lower-severity flags mark instances in reflective passages or dialogue where the construction may be acceptable.

You can filter your Proofread results to show only passive-voice flags, which lets you do a focused passive-voice revision pass through your entire manuscript. This targeted approach is more efficient than trying to catch passive constructions while also revising for other issues. Work through the high-severity flags first, then decide case by case on the lower-severity ones.