Legal doublet

A legal doublet is a standardized phrase used frequently in English legal language consisting of two or more words that are irreversible binomials and frequently synonyms, usually connected by and, such as cease and desist.

The doubling—and sometimes even tripling—often originates in the transition from use of one language for legal purposes to another. Situations include in Britain, where a native English term is joined to a Latin or Law French term, and in Romance-speaking countries, where a Latin term is joined to the vernacular. To ensure understanding, the terms from both languages were retained and used together. This reflected the interactions between Germanic and Roman law following the decline of the Roman Empire. These phrases are often pleonasms and form irreversible binomials.

The order of the words cannot be reversed, as it would be seen as particularly unusual to ask someone to desist and cease or to have property owned clear and free rather than the standard free and clear term.

In other cases the two components have differences which are subtle, appreciable only to lawyers, or obsolete. For example, ways and means, referring to methods and resources respectively, are differentiable, in the same way that tools and materials, or equipment and funds, are differentiable—but the difference between them is often practically irrelevant to the contexts in which the irreversible binomial ways and means is used today in non-legal contexts as a mere cliché.

Doublets may also have arisen or persisted because the solicitors and clerks who drew up conveyances and other documents were paid by the word, which tended to encourage verbosity.