To spread widely, especially information, knowledge, or ideas; to distribute to a broad audience through deliberate, systematic effort; the neutral, institutional word for wide distribution of content

Disseminate is the workhorse of this set — the neutral, broadly applicable word for deliberate, wide distribution of information or knowledge. Its etymology reveals its logic: from the Latin dis- (in all directions) and seminare (to sow seed), it describes the scattering of seeds across a wide field, with the expectation that some will take root. The word is the default in academic and institutional contexts: findings are disseminated through journals, health information is disseminated through public campaigns, research results are disseminated to policymakers. It carries no implication about the ideological content of what is being spread (unlike propagate), no requirement for official authority behind the distribution (unlike promulgate), and no specific mechanism of simultaneous broadcast or network circulation. It simply means: this information is being spread deliberately and widely.

Where you’ll encounter it: Academic writing, public health communication, research publication, institutional communication, policy documents, descriptions of knowledge transfer and information campaigns

“The research consortium committed to disseminating its findings through open-access publications, conference presentations, and policy briefs — recognising that the value of the work depended as much on its reaching the right audiences as on the quality of the research itself.”

To spread and promote an idea, belief, theory, or practice widely and actively; to cause something to multiply and extend its reach through deliberate promotion; with a frequent implication that the content is ideological and the spreading intentional for influence

Propagate is disseminate with a charge — the word for spreading that aims not just to inform but to reproduce, to multiply, to extend the reach of a belief or practice through active promotion. The word’s root, the Latin propagare (to extend, to multiply), gives it the sense of deliberate growth through reproduction — the same sense present in the word propaganda, which derives directly from it. When ideas are propagated, the spreader is not simply making information available but actively working to ensure the belief takes hold and extends itself. In scientific contexts, the word is more neutral — signals propagate through networks, genetic traits propagate through populations — but in social and political usage, propagate almost always implies intentional promotion of ideological content. This makes it a word with critical potential: describing someone as propagating a belief is subtly different from saying they are disseminating information about it.

Where you’ll encounter it: Political and religious analysis, media criticism, descriptions of social movements and ideological campaigns, scientific contexts (where it describes the spread of signals or genetic traits), critical commentary on persuasion and influence

“The movement propagated its ideology through a sophisticated network of social media accounts, local study groups, and independently published pamphlets — each medium reaching a different demographic while reinforcing the same core doctrines.”

To make a decree, law, doctrine, or idea widely known by official or authoritative announcement; to put a law or regulation into effect by formal public declaration; to promote or make known through authoritative channels

Promulgate is the word for spreading through authority — the formal, official announcement that makes something publicly known and, in legal contexts, operationally binding. When a government promulgates a regulation, it is not merely distributing information about the regulation: it is performing the official act that brings the regulation into legal existence and makes it applicable to those it governs. When a religious body promulgates a doctrine, it is not simply sharing its views: it is making an authoritative declaration that carries the weight of institutional position. The word comes from the Latin promulgare (to make publicly known), and the sense of formal public declaration — as distinct from mere distribution — is its defining quality. Promulgate requires an authoritative source: you cannot promulgate a regulation if you lack the authority to do so. This is what distinguishes it from every other word in this set: the authority of the source is constitutive of what promulgate describes.

Where you’ll encounter it: Legal and governmental writing, religious and institutional contexts, formal policy documents, descriptions of official announcements, academic commentary on how laws and regulations are enacted

“The regulatory body promulgated new data privacy standards that took effect across all member states six months after the announcement — giving organisations the transition period they had requested while making clear that the new requirements would be enforced with the full weight of the regulatory framework.”

To transmit information, a programme, or a message over a wide area simultaneously; to make something widely known to a large, undifferentiated audience; emphasises the reach and simultaneity of distribution rather than the reception, uptake, or authority behind it

Broadcast is the mass media word — it describes wide, simultaneous distribution to a large audience without any implication about what happens at the receiving end. The image behind the word is agricultural: to broadcast seed was to scatter it widely across a field in a single sweeping motion, as opposed to planting it in rows. The media metaphor is apt: a broadcast reaches many people at once, without discrimination, without knowledge of who is listening, and without expectation of individual response. This is what distinguishes broadcast from circulate: broadcasting is pushing information outward to a large undifferentiated audience; circulating is moving information through an existing network of relationships. And unlike propagate, broadcast carries no implication about the ideological character of the content; unlike promulgate, it requires no authority beyond the ability to reach a large audience simultaneously.

Where you’ll encounter it: Media and communications writing, journalism, descriptions of public announcements and mass communication, technology contexts, any situation where the scale and simultaneity of distribution is what matters

“The emergency management agency broadcast the evacuation order across all available channels simultaneously — radio, television, social media, and the national alert system — to ensure that every resident in the affected zone received the instruction as quickly as possible.”

To move or cause to move continuously or freely through a system, group, or community; (of information, documents, or ideas) to pass from person to person or place to place through existing networks and relationships

Circulate is movement through a network — the word for information or ideas that travel through existing channels, relationships, and communities rather than being pushed outward to a large undifferentiated audience. When a memo circulates through an organisation, it passes from desk to desk through the existing structure of relationships and communication. When a rumour circulates, it moves through social connections, gaining momentum as it goes. When an idea circulates among scholars, it travels through the existing community of researchers, discussed and refined at each point of contact. The key distinction from broadcast is the mechanism: broadcast is transmission outward to a wide audience; circulate is movement through a defined community or system. The key distinction from disseminate is the initiative: disseminate describes deliberate distribution by a source; circulate describes movement that may be self-sustaining once initiated, with the original source becoming less central as the content moves through the network.

Where you’ll encounter it: Organisational communication, descriptions of rumour and gossip, document and memo distribution, descriptions of ideas moving through intellectual or social communities, financial and economic writing

“Weeks before the official announcement, the news was already circulating among senior staff — passed through informal conversations, read between the lines of scheduling changes, and confirmed by a handful of people with access to the relevant meetings.”