Definition
Forcible detainer is the offense of wrongfully retaining possession of land or tenements by force, threats, or strong-hand methods, without lawful authority — regardless of how possession was originally acquired. The defining feature is that the unlawful element lies in the manner of keeping possession, not necessarily in how it was taken. A person who enters land peaceably but then refuses to surrender it through force or menace commits forcible detainer even though no forcible entry occurred.
The term appears most frequently as the second half of the compound phrase "forcible entry and detainer," which describes the full cycle of wrongfully seizing and wrongfully holding property. Modern statutes in virtually every U.S. jurisdiction have absorbed both concepts into summary eviction proceedings, where "forcible detainer" or "unlawful detainer" labels the cause of action a landlord brings to recover possession.
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Common Confusion
FORCIBLE DETAINER vs. UNLAWFUL DETAINER: These terms are often used interchangeably in modern statutes, but they carry distinct historical meanings. Forcible detainer traditionally required actual or threatened force — possession held "with strong hand." Unlawful detainer is the broader modern concept: holding over without right, which may involve no force at all (as when a tenant simply refuses to leave after a lease expires). Researchers working across historical and modern sources must be alert to this shift. A 19th-century treatise discussing "forcible detainer" describes a narrower, more violent wrong than a modern statute using the same label.
FORCIBLE DETAINER vs. FORCIBLE ENTRY: Forcible entry is the wrongful taking of possession by force. Forcible detainer is the wrongful keeping of possession by force. Either can exist without the other: a person may enter peaceably and detain forcibly, or may enter forcibly and then abandon. Courts and statutes typically address them together, but the elements differ.
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Core Elements
At common law, forcible detainer required:
1. WRONGFUL POSSESSION: The party holding must lack lawful right to retain possession — either the original entry was wrongful, or a right that once existed (such as a tenancy) has terminated.
2. ACTUAL FORCE OR STRONG-HAND MENACE: Retention must be accomplished by actual force, threats of violence, or conduct that would intimidate a person of ordinary courage. Mere refusal to vacate, standing alone, did not satisfy this element historically. Burrill's notes the "strong hand" requirement explicitly, with an exception where parties stand in a landlord-tenant relationship.
3. WITHOUT AUTHORITY OF LAW: The detention must lack any legal justification — no colorable title, no court order, no statutory privilege.
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Recognized Forms
/SUBTYPES
SIMPLE FORCIBLE DETAINER: Wrongful retention by force or menace alone, without any additional unlawful act beyond the detention itself.
COMPOUND FORCIBLE DETAINER: Retention combined with additional acts of violence or unlawful conduct beyond the bare act of holding possession. Rapalje & Lawrence distinguish simple from compound forms on this basis.
FORCIBLE ENTRY AND DETAINER (FED): The combined statutory action — now the dominant form in American practice — which consolidates both wrongful entry and wrongful holding into a single summary proceeding for recovery of possession.
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Why It Matters in Research
The central research trap is anachronism. When you encounter "forcible detainer" in sources before roughly 1850, you are reading about a criminal offense at common law with a force requirement. When you encounter the same phrase in modern state statutes, you are almost certainly reading about a civil summary proceeding in which "force" has been constructively defined or eliminated as an element. The historical sources in the Law Mind corpus — particularly Blackstone's Commentaries (cited by every dictionary entry here) and Stephens' Commentaries — describe the criminal-law conception. Modern property law materials describe the civil-procedure conception. These are not the same thing, and conflating them will distort research on either.
The landlord-tenant corpus connection is significant: the modern FED proceeding, addressed in the Property Law Encyclopedia entry on Summary Proceedings and Unlawful Detainer, descends directly from forcible detainer doctrine but has been so thoroughly reformed by statute that the common-law force requirement survives in few jurisdictions. Researchers tracing the history of summary eviction must pass through forcible detainer to understand the procedural lineage.
Burrill's addition — that actual force with strong hand is required "except where the parties stand in the relation of landlord and tenant" — signals an early doctrinal crack that widened into the modern unlawful detainer framework. That carve-out is where the history of eviction law lives.
Finally, note that "detainer" also appears in immigration law (ICE detainers), an entirely unrelated use of the word. The Law Mind Immigration Law Encyclopedia entry on ICE Detainers addresses that doctrine separately, and the two bodies of law should not be cross-contaminated in research.
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Historical Dictionary Support
The four source dictionaries are in close agreement on the core definition, all tracing directly to Blackstone (4 Bl. Comm. 148) and Stephens (4 Steph. Comm. 280). Black's (both editions) and Burrill's reproduce the Blackstone formulation nearly verbatim: violent keeping of possession with menaces, force, and arms, without authority of law.
Burrill's is the most analytically useful of the historical sources, adding the "strong hand" gloss and the landlord-tenant exception that the others omit. Rapalje & Lawrence contributes the simple/compound distinction, which is absent from the Black's entries and from Burrill's. Together, these sources give researchers a reasonably complete picture of the 19th-century common-law conception.
What the historical dictionaries miss collectively is the transformation that statutory reform wrought on this concept. None of them grapple with the emerging summary-proceeding statutes that were, by the time of their publication, already displacing common-law forcible detainer in American courts. Researchers should treat these entries as accurate descriptions of the criminal common-law baseline, not as guides to the statutory landscape that followed.
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Jurisdictional Note
American states vary considerably in whether their FED statutes retain any formal force requirement or have collapsed forcible detainer entirely into the broader unlawful detainer framework. A handful of states maintain separate statutory causes of action for forcible detainer (with a force element) and unlawful detainer (without). Most have merged them. Researchers must consult the specific state statute rather than assuming the common-law force requirement survives.
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Encyclopedia Cross-Reference
Landlord-Tenant — Eviction — Summary Proceedings and Unlawful Detainer (The Law Mind Property Law Encyclopedia)
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