Definition
Breach of promise is shorthand for breach of promise of marriage — a common law cause of action arising when one party withdraws from a valid engagement to marry. The withdrawing party, historically the man, could be sued by the other for damages flowing from the broken pledge. Recoverable damages included pecuniary losses (expenses incurred in preparation for the marriage, loss of the anticipated financial position the marriage would have provided) and, in many jurisdictions, damages for humiliation, injured feelings, and loss of social standing.
In its strict sense, the term encompasses any violation of a promise. In legal usage, however, it has been almost entirely absorbed by the marriage context. When lawyers or courts say "breach of promise" without qualification, they mean breach of promise of marriage.
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Common Language
Modern common usage (Wiktionary): A tort in common law arising when a man withdraws an earlier promise to marry a woman; abolished in many jurisdictions.
Historical common usage (Webster's 1913): Webster's 1913 does not carry a standalone entry for this phrase, treating it as a self-evident compound of "breach" and "promise."
The ordinary reader encountering "breach of promise" might understand it as any broken pledge — a natural reading given the words. The legal term is far narrower: it refers specifically to the broken promise to marry, treated as a distinct and historically significant cause of action with its own elements, defenses, and legislative history. The broader reading, while not wrong, will send a researcher to the wrong shelf.
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Common Confusion
Breach of promise is not the same as breach of contract in the general sense, though an engagement was theoretically analyzed as a form of contract. The distinction matters in research because breach of promise actions followed specialized rules — different damage measures, particular defenses (discovery of the other party's bad character, for instance), and a distinct procedural treatment — that did not map cleanly onto ordinary contract doctrine. Researchers should also distinguish breach of promise from alienation of affections and criminal conversation, related heart-balm actions that target third parties rather than the defaulting fiancé.
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Why It Matters in Research
This term is a research trap in two directions.
First, temporal: breach of promise of marriage was a live and frequently litigated cause of action through the mid-twentieth century in the United States and the United Kingdom. American jurisdictions began abolishing it by statute starting in the 1930s, with the wave of so-called "heart-balm statutes" accelerating through the 1940s and 1950s. Researchers working in case law or treatises from before roughly 1950 will find substantial doctrinal development. Researchers working in modern sources will find mostly historical discussion and the residual question of whether an engagement ring must be returned when the engagement dissolves — a question some courts still resolve by reference to breach-of-promise reasoning even where the formal action no longer exists.
Second, linguistic: because Black's itself notes that the term is "chiefly used" as shorthand for the marriage context, researchers pulling historical statutes or pleadings that reference "breach of promise" without qualification should assume the marriage meaning unless context clearly indicates otherwise. The elliptical usage is deeply embedded in older legal writing.
For contract researchers: do not expect breach-of-promise doctrine to illuminate general contract breach analysis. The bodies of law developed largely in parallel, and heart-balm abolition statutes expressly carved the cause of action out of ordinary contract recovery frameworks.
Corpus connections: researchers approaching this term through employment or implied contract sources (such as the handbook and policy cases treated in the Law Mind Employment encyclopedia) are working with a distinct analytical lineage — modern implied contract doctrine — that shares vocabulary but not history with the classical breach-of-promise action.
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Historical Dictionary Support
Black's Law Dictionary defines the term concisely: "Violation of a promise; chiefly used as an elliptical expression for 'breach of promise of marriage.'" This entry is admirably honest about how the term actually functions in legal usage — the general definition leads immediately to the specific application that has always dominated practice.
What Black's does not capture is the full arc of the action's decline. The dictionary entry, in its earlier editions, reflects a world in which the cause of action was viable and contested. Later editions note the legislative abolition trend without fully mapping which jurisdictions retain the action, which have abolished it, and which occupy middle ground (allowing recovery of engagement-related expenses but not general emotional damages). Researchers relying solely on Black's for jurisdictional status will need to verify against current statutory compilations.
Historical treatises — including those on domestic relations and on contracts — treated breach of promise as significant enough to warrant extended discussion of elements, defenses, and damages. That doctrinal depth does not appear in the dictionary entry and must be sourced elsewhere.
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Jurisdictional Note
Roughly half of American states abolished breach of promise of marriage by statute during the twentieth century. England abolished the action by the Law Reform (Miscellaneous Provisions) Act 1970. Where abolished, some jurisdictions nonetheless permit limited recovery — particularly for the return of engagement gifts — under restitution or unjust enrichment theories. Researchers must verify current statutory status jurisdiction by jurisdiction; the common law baseline is no longer a safe assumption.
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Encyclopedia Cross-Reference
The Law Mind Contracts & Commercial Law Encyclopedia — Breach: Total Breach vs. Partial Breach
The Law Mind Contracts & Commercial Law Encyclopedia — Breach: Notice of Breach Requirements
The Law Mind Employment & Labor Law Encyclopedia — Breach of Implied Contract: Handbooks, Policies, and Promises
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