Searle's Classification of Speech Acts
Searle's classification system organizes speech acts into five categories based on what the speaker is trying to accomplish with their utterance. It builds directly on Austin's foundational work by providing a more systematic framework, and it gives you a reliable way to analyze how language functions beyond its literal meaning.
Categories of Speech Acts
Each of Searle's five categories has a distinct communicative purpose. The key to telling them apart is asking: what is the speaker doing by saying this?
- Assertives commit the speaker to the truth of some proposition. The speaker is representing the world as they believe it to be. Examples: stating, claiming, reporting, concluding. ("The exam is on Friday.")
- Directives attempt to get the hearer to do something. The world-to-word direction of fit here is reversed: the speaker wants the world to change to match their words. Examples: ordering, requesting, advising, recommending. ("Please close the door.")
- Commissives commit the speaker to some future course of action. Like directives, they have a world-to-word direction of fit, but the obligation falls on the speaker rather than the hearer. Examples: promising, vowing, offering, threatening. ("I'll have the report done by Monday.")
- Expressives express the speaker's psychological state about a state of affairs. There's no direction of fit here because the speaker isn't trying to make the words match the world or vice versa. Examples: thanking, apologizing, congratulating, welcoming. ("Congratulations on your promotion.")
- Declarations bring about a change in the world simply by being uttered. They require the speaker to hold a specific institutional role or authority. Examples: christening, firing, sentencing, appointing. ("You're fired.")

Components of Utterances
To classify a speech act, you need to pull apart two layers of every utterance:
Propositional content is the literal semantic content: the state of affairs or fact about the world that the utterance describes. Think of it as what is being said.
Illocutionary force is the intended function or purpose behind the utterance: what the speaker is doing by saying it. This depends on the speaker's intention and the context of the speech act.
These two layers often point in different directions, which is exactly why this distinction matters:
- "I'll be there at 8 pm" has the propositional content of a future event (the speaker arriving at 8), but its illocutionary force could be a promise (commissive).
- "Can you pass the salt?" has the propositional content of a yes/no question about ability, but its illocutionary force is a request (directive).

Applying and Evaluating Searle's Taxonomy
Applying the Taxonomy
When you encounter an utterance and need to classify it, follow these steps:
- Identify the propositional content: what state of affairs does the utterance describe?
- Determine the illocutionary force: given the context and speaker's intention, what is the speaker trying to accomplish?
- Match the illocutionary force to one of the five categories based on its communicative purpose.
A couple of examples to see this in action:
- "I now pronounce you husband and wife" โ the propositional content describes a change in marital status, and the illocutionary force is a declaration, because the utterance itself (spoken by someone with institutional authority) brings that change about.
- "I'm sorry for being late" โ the propositional content concerns the speaker's tardiness, and the illocutionary force is an expressive, because the speaker is conveying their psychological state (regret).
Limitations of Searle's Taxonomy
Searle's system is a powerful analytical tool, but it has real shortcomings you should be aware of:
- Category overlap. Some utterances fit multiple categories depending on context. "I'll be there" could be a commissive (a promise) or an assertive (a simple statement of fact). The boundaries between categories aren't always clean.
- Indirect speech acts. Searle's taxonomy works best for direct speech acts. Indirect speech acts, like hints, irony, or polite forms ("It's cold in here" meaning close the window), are harder to classify because the illocutionary force diverges sharply from the surface form.
- Cultural variation. The taxonomy is grounded in English and Western communicative norms. How speech acts are performed and interpreted varies across cultures and languages, so the categories don't always map neatly onto non-Western communicative practices.
- Non-verbal communication. Searle's framework focuses on verbal utterances and doesn't explicitly account for gestures, facial expressions, or other non-verbal signals that can perform or modify speech acts.