Definition
"Defeat or obstruct" is a paired legal phrase describing conduct that prevents, hinders, or actively resists the enforcement of a legal right or the prosecution of a legal proceeding in a manner the affected party cannot reasonably overcome through ordinary diligence. The phrase appears most frequently in the law of suretyship and bonds, where it describes acts by a surety (or other obligor) that impede a creditor's ability to pursue a suit or collect on an obligation. The phrase implies more than mere inconvenience — it connotes active resistance or obstruction of recognized legal rights.
In the suretyship context specifically, the phrase captures conduct by a surety that rises to the level of prevention or hindrance of a creditor's suit, not merely delay or difficulty. The acts must be ones that a creditor of ordinary diligence could not work around or remedy.
Common Language
Modern common usage (Wiktionary): "Defeat" means to win a victory over someone or something, or to cause a plan or effort to fail. "Obstruct" means to block, hinder, or impede movement, progress, or action.
Historical common usage (Webster's 1913): "Defeat" — to overcome or vanquish; to frustrate or render null. "Obstruct" — to block up; to stop the passage of; to hinder from passing.
The common meanings of both words track their legal meanings reasonably well in isolation, but the paired phrase "defeat or obstruct" in legal usage carries a specific threshold: it requires acts of active resistance to legal rights that cannot be overcome with reasonable diligence. Casual hindrance or inconvenience does not satisfy the standard. The conjunction of both words in legal drafting also signals a term of art rather than ordinary description — courts treat the phrase as a unified standard, not two separate inquiries.
Common Confusion
"Defeat or obstruct" in the suretyship context should not be confused with obstruction of justice as used in criminal law. In criminal law, "obstruction" describes interference with judicial proceedings, investigations, or law enforcement. In suretyship and bond law, "defeat or obstruct" describes conduct by obligors or sureties that impairs a creditor's civil right to sue or collect. The phrase functions as a threshold test in civil obligation law, not as a criminal element. Researchers who encounter this phrase in older pleading records, bond instruments, or equity proceedings should be careful not to import the criminal-law meaning.
Why It Matters in Research
This phrase is predominantly a term of art in historical bond and suretyship law, and researchers are most likely to encounter it in 18th- and 19th-century legal instruments, pleadings in assumpsit or debt, and equity proceedings involving guarantors and obligors. Bouvier's treatment is brief and the entry in most sources is incomplete — the Bouvier excerpt available here cuts off mid-sentence, which is characteristic of the phrase's treatment across historical dictionaries: it appears as a gloss on bond-language rather than as a fully developed doctrine.
Researchers should be alert to the following:
First, the phrase imposes a qualitative threshold. Not every act that complicates a creditor's suit qualifies. The conduct must amount to actual prevention or hindrance, and it must be something the creditor could not overcome through reasonable diligence. Courts applying this standard in historical cases looked at the totality of the surety's conduct, not isolated acts.
Second, the phrase travels with specific bond language. When researching historical instruments — particularly performance bonds, appearance bonds, or debt instruments — "defeat or obstruct" signals a standard clause identifying conduct that triggers forfeiture or liability of the surety. Recognizing the phrase as a term of art, rather than plain descriptive language, is essential for accurate interpretation.
Third, modern equivalents may use different language. Contemporary bond instruments and surety agreements may use "impair," "frustrate," or "prevent" rather than the historic paired phrase. Corpus researchers moving between historical and modern instruments should note the terminological shift without assuming a change in underlying legal standard.
Fourth, in criminal law research, "obstruct" appears in a completely different doctrinal family — obstruction of justice statutes — where it carries distinct elements and a different evidentiary framework. The encyclopedia entries linked below address that separate body of law.
Historical Dictionary Support
Bouvier's is the primary historical dictionary source for this phrase, and its treatment — though brief — is analytically precise. Bouvier identifies the key components: (1) an act by the sureties; (2) amounting to prevention or hindrance of a suit; (3) in opposition to the will and rights of the creditor; (4) which the creditor cannot overcome with reasonable diligence. Bouvier further specifies that the terms "import resistance and obstruction" to the creditor's rights — language that distinguishes the standard from mere delay or interference.
The truncated state of the available Bouvier excerpt is a research caution in itself: the full entry likely elaborated on what types of acts do and do not satisfy the standard, and researchers relying on abridged reprints of Bouvier may be working from incomplete definitions. Where the full text of Bouvier is accessible, consulting it directly is advisable.
Other major historical dictionaries (Black's, Burrill's) do not appear to have treated this as a standalone entry, likely because it was understood as bond-instrument language requiring contextual interpretation rather than fixed definition. This makes Bouvier the authoritative historical source and limits the scope for cross-dictionary synthesis.
Encyclopedia Cross-Reference
Obstruction of Justice (18 USC 1501–1521) — The Law Mind Criminal Law Encyclopedia
Resisting Arrest and Obstruction of Law Enforcement — The Law Mind Criminal Law Encyclopedia