Definition
A Latin phrase meaning "for, or in case of, default of issue." It describes a condition or limitation in a conveyance, devise, or grant that operates upon the failure of a grantee or devisee to produce living heirs of the body — that is, direct lineal descendants. When land was granted with a clause operative pro defectu exitus, the property would revert or pass to an alternate taker if the primary recipient died without issue. The phrase identifies the triggering condition (absence of issue) rather than the legal mechanism itself.
Common Confusion
Three related Latin phrases appear in close proximity in historical sources and are easily conflated:
PRO DEFECTU EXITUS — default of issue (failure of direct descendants)
PRO DEFECTU HÆREDUM — failure of heirs generally (a broader class, potentially including collateral heirs)
PRO DEFECTU JUSTITIÆ — for defect or want of justice (an entirely different concept, describing a jurisdictional or procedural basis for action)
Researchers should take care not to treat these as interchangeable. Default of issue is a narrower condition than failure of heirs: a person may die without direct descendants but still leave collateral heirs. The distinction controlled the scope of reversionary clauses and fee tail constructions in classical real property law. Burrill records all three phrases in proximity, which heightens the risk of confusion when reading historical sources quickly.
Why It Matters in Research
This phrase appears almost exclusively in historical real property instruments, medieval and early modern English land law, and treatises on estates in fee tail. Researchers will encounter it in:
DEED AND CONVEYANCE LANGUAGE: Colonial and early American deeds drawn on English models used this phrase to describe conditions subsequent or limitations over. Identifying it correctly is essential to tracing chain of title and understanding what interest the original grantor conveyed.
FEE TAIL CONTEXT: Pro defectu exitus is conceptually tethered to the fee tail — an estate that descends only to lineal issue. The failure of issue condition is precisely the event that terminated a fee tail and triggered reversion to the grantor or remainder to a third party. Researchers working with fee tail instruments should treat this phrase as a marker pointing directly to estate-tail doctrine.
STATUTORY TRANSFORMATION: After the widespread abolition or conversion of fee tail estates in American jurisdictions (most states converted fees tail to fees simple by statute), the operative force of pro defectu exitus clauses largely disappeared. In states where fee tail persisted longer — or where historical instruments predate conversion statutes — the phrase may still bear on title questions.
CORPUS NAVIGATION: Because the phrase is Latin and highly technical, it appears rarely in American case law but more frequently in English chancery and common law reports, early treatises (Coke, Littleton, Fleta), and colonial-era conveyancing practice. The citation to 2 Salk. 620 (Salkeld's Reports) appearing across all three dictionary sources points to an English case; researchers following that citation are working in late-seventeenth- or early-eighteenth-century English common law, which may or may not map cleanly onto the American jurisdiction of interest.
Historical Dictionary Support
All three source dictionaries — Black's (1st ed.), Black's (2nd ed.), and Burrill's — give substantively identical core definitions: "for, or in case of, default of issue," with citation to 2 Salk. 620. The uniformity signals a settled, narrow meaning with little definitional dispute across the period these dictionaries cover.
Burrill's is the most useful of the three for research purposes. It alone distinguishes pro defectu exitus from the cognate phrases pro defectu hæredum and pro defectu justitiæ, and it supplies the additional citation to Fleta, lib. 3, c. 12, § 1 for the heirs variant — pointing researchers toward a thirteenth-century English legal treatise and confirming the phrase's deep medieval roots. The Black's editions, by comparison, offer only the bare translation and a single citation, making them adequate for identification but insufficient for understanding context or distinguishing related terms.
None of the three sources explains the substantive legal doctrine triggered by the condition — the mechanics of fee tail, reversion, or remainder — leaving researchers to pursue those questions through the related terms listed below.
Jurisdictional Note
Fee tail estates, to which this phrase is most closely tied, were abolished or converted to fee simple by statute in the great majority of American states, many during the nineteenth century. The operative legal significance of pro defectu exitus clauses in modern American title work is therefore largely historical. English law retained fee tail estates until the Trusts of Land and Appointment of Trustees Act 1996 effectively eliminated new entails. Researchers analyzing instruments from jurisdictions and periods where fee tail remained valid law should treat this phrase as potentially dispositive on questions of title and succession.