Conversational Implicature

The maxim of Quantity consists of two requirements: give as much information as the purpose of the conversation requires, and do not give more than is required. Insufficient and excessive information violate it in different ways, but both are noticeable to the listener.

The maxim of Quality requires you to try to make your contribution truthful: do not say what you believe to be false or what you lack grounds for saying. Most discussions of irony, metaphor, and hyperbole begin with this maxim.

The maxim of Relation, also called relevance, has one requirement: be relevant. The maxim of Manner concerns not content but form: avoid obscurity, ambiguity, and unnecessary wordiness, and be orderly.

In Grice’s classic analysis, flouting a maxim is a case in which the speaker expects the listener to recognize the deviation and recover an additional meaning. A strange utterance alone is not enough: context, shared knowledge, and assumptions about the speaker’s intention are important.

The implicature that arises in this way depends on the situation and the listener, so it can be denied or clarified: “I don’t mean he’s incompetent, only that...”. This distinguishes an implicature from literal meaning, which cannot be denied in the same way.

Each maxim has its own typical flouts: withholding or adding information, an obvious falsehood, an open change of topic, or deliberately unclear wording.

Grice distinguishes several cases. Violating is covert non-observance, often intended to mislead. Opting out is an open refusal to meet a particular conversational requirement. Clashing is a conflict in which observing one maxim prevents the speaker from observing another. Flouting is deliberate, obvious non-observance that invites the listener to infer additional meaning. A covert violation is not a flout, although such an utterance may also carry implicatures, including deceptive ones.

The difference depends on whether the listener notices the violation and whether the speaker is relying on that notice. The same false statement can be a flout (a hyperbole that everyone understands) or a violation (a statement that the listener is meant to believe).

Quantity: withholding the main point in favor of something secondary (“giving less than needed”) or, conversely, adding excessive detail to signal avoidance. Quality: irony, metaphor, and hyperbole in which the literal meaning is obviously false and another meaning is inferred. Relation: an open change of topic or a reply whose connection to the question the listener must recover. Manner: deliberate vagueness, paraphrase, word splitting, or ambiguity.

To identify the maxim, ask about what was said: Has the topic changed (Relation)? Is it obviously false (Quality)? Is there too much or too little information (Quantity)? Is the form strange (Manner)? If several answers seem possible, what matters is what the listener infers, not the name of the maxim.

The tautology “A promise is a promise” often conveys “a promise must be kept.” Even “The seminar was a seminar that was held” could, in context, suggest “there is nothing more to say.” An isolated form proves neither the presence nor the absence of an implicature: expectations and the situation are needed.

One utterance can sometimes be explained by several maxims: praising a minor detail gives less than is needed and may also seem irrelevant. Justify your analysis, and if several explanations are compatible, name them. There is no need to force yourself to choose only one label.

A hint may not be understood without shared knowledge. The listener may then interpret the utterance literally, ask for clarification, or simply fail to understand it. The distinction between generalized and particularized implicatures and the some / all scale are covered in neighboring lessons.

English has established expressions for analytical description: to flout (exploit) a maxim, to give less (more) information than required, to infer, the implication is, to take something literally (at face value), and to be misled. An analysis usually has four parts: which maxim is involved, what was expected, what was said, and what was inferred. You should also explain separately why this is a flout rather than a covert violation.

When creating a flout, make sure that the deviation is noticeable and that the listener has a clue for decoding it, while the utterance itself remains polite and, when necessary, truthful. When responding to a flout, respond to the inferred meaning rather than the literal words.

On a classical scale, the stronger alternative is more informative: for a nonempty group, all entails some, and and entails inclusive or. Examples include ⟨some, most, all⟩, ⟨possible, certain⟩ and ⟨or, and⟩. Evaluative sequences such as good — excellent and like — love can produce similar inferences, but depend on context and are not always strict logical scales.

Angle brackets ⟨…⟩ represent an ordered set of alternatives. Not any two words form a relevant scale: they must concern the same property, be relevant, and share an understood stronger alternative. Synonymy or opposition alone does not guarantee the inference.

The reasoning has three steps. The speaker could have used a stronger expression. That expression would be relevant to the conversation. The speaker probably knows whether it is true. The inference is that the stronger expression probably does not apply. This is one aspect of the general expectation of sufficient information; the broader theory is a separate topic.

The third step determines the inference’s strength. If the speaker is assumed to know the whole picture, a strong “not all” inference arises. If they have seen only part of the evidence, it weakens to “I don’t know whether all”: nothing is asserted about the rest.

An implicature can be withdrawn without contradiction: Some, and in fact all, of the files can be recovered. The “not all” inference is cancelled while the literal lower bound, “at least some”, remains.

The literal assertion cannot be withdrawn without contradiction. He sometimes answers emails — in fact, never is contradictory because sometimes asserts at least some occasions. As a practical test, add “in fact, even more”. If the continuation is natural, you are cancelling an implicature; if it creates a contradiction, you have challenged the literal content.

You can cancel “not all” with stronger all, or suspend it: some, perhaps all / some, but I don’t know whether all. In fact, indeed and or even serve different functions and do not always require one scale. If not can introduce a stronger assessment or mean concessive “although not”; read the context.

In some contexts, the “not stronger” inference disappears. This often happens in conditionals and patterns such as anyone who… or whenever…. The weaker expression can set a minimum condition, so the all case also falls within the rule.

When complete knowledge or relevance of the stronger alternative is not established, the usual inference can weaken or fail to arise. This is not a mechanical ban on implicatures in a particular grammatical construction; the specific context still matters.

Negation sometimes rejects an overly weak description rather than the literal property: The meeting wasn’t merely useful — it transformed our plans. Merely explicitly signals this strengthening. Without it, context and intonation matter, because changed plans do not by themselves prove that a meeting was useful.

Similarly, not all does not mean none. Not all of the data were lost literally says only that some survived. The usual inference that some were nevertheless lost is cancellable, not compulsory meaning. Inferring none from not all is a common logical error.

When a stronger result matters to the question and you know it, the weaker word may mislead. But some is not always inappropriate when all is known: if only the existence of a few cases matters, the weaker answer may be sufficient. Follow the conversation’s purpose.

To leave room for uncertainty, choose the weaker word deliberately or add an explicit qualification: at least some, if not all, I can’t speak for the rest. If listeners may wrongly infer “not all” or “not excellent”, correct that openly, for example in fact, all of them.

In classic examples, a man may suggest the absence of a close relationship, and between events may suggest sequence, if may suggest the additional restriction ‘only if’, and some may suggest ‘not all’. I don’t believe… is often understood as a tentative belief in the negative proposition. These are typical readings, not a mechanical transfer of negation or universal rules; theoretical analyses of individual cases differ.

The word ‘typically’ matters: these inferences are not logical entailments. They arise by default and disappear when the speaker or context blocks them. They are therefore cancellable, as discussed below.

A particularised implicature has no trigger in the form alone. The listener sees that the response does not answer the question directly, assumes that the other person is nevertheless cooperating, and looks for a connection within their shared knowledge. That connection produces the inference.

A particularised inference relies on contextual assumptions: classes may take up an evening; a manager may be expected to reply promptly in this situation; lights being off in a pharmacy may indicate that it is closed. These are shared or recoverable assumptions, not guaranteed truths: the lights could have been switched off for another reason.

Changing the preceding question helps reveal an inference’s dependence on the situation. If the statement about the laptop stops functioning as a refusal after a different question, that supports a particularised analysis. An inference’s survival or disappearance in one test does not automatically classify every case.

The test also works when the wording stays identical: the same sentence in different conversations can be a refusal or simply information. This shows that refusal was not part of the words themselves.

An implicature can be cancelled without contradiction because it is not part of what is stated: ‘Some of the samples were contaminated — I haven’t checked the rest’ does not contradict itself. A contradiction arises only when what is stated is denied, rather than what is typically inferred.

Cancellation can be explicit, through a continuation with but, though or in fact, or contextual, when the circumstances show that the inference does not apply. A particularised inference also disappears when an added fact breaks the link with the question, such as ‘but I have already packed’.

Cancellability helps distinguish a typical additional inference from literal content. However, the test must be interpreted in context: an unnatural continuation does not always imply a logical contradiction, and changing a word’s meaning or correcting what was said is not ordinary cancellation of an implicature.

Distinguishing the two types is useful, but the boundary is not always sharp. A generalised inference also depends on the situation: when completeness is not relevant to the conversation, it weakens or disappears. Particularised inferences can be strong, virtually unavoidable, or weak, merely possible.

Researchers explain the boundary between the two types in different ways. For learning purposes, identify the literal content, the possible inference and the context that supports or blocks it. Do not assign an exact frequency ratio to the two types without research.

Knowing about implicatures helps not only with understanding but also with choosing words. When an unwanted generalised inference could mislead, especially in reports, letters and contracts, block it in advance: state the exact quantity, the limits of your knowledge or the actual relationship.

A particularised inference, by contrast, lets a speaker refuse politely or hint, but leaves them vulnerable to misunderstanding: the listener may lack the necessary knowledge. When the stakes are high and knowledge is not shared, it is better to be direct.

If you are unsure whether you have interpreted an implicature correctly, clarify it with a neutral question naming your inference, rather than an accusation.