Definition
A circ of action (also rendered "circuity of action") occurs when a litigant pursues a roundabout or indirect course of legal proceedings that requires two or more separate suits to resolve a dispute that could have been settled in a single, more direct action. Rather than resolving all rights and obligations among the parties in one proceeding, the circuitous path multiplies litigation unnecessarily — each suit depending on or flowing from the last, creating a loop or circuit of proceedings where one would suffice.
The concept is less a cause of action or legal right in itself and more a condition or defect in litigation strategy or pleading that courts historically recognized and sought to prevent. Equity courts in particular exercised jurisdiction partly on the grounds of avoiding circ of action: if a party would otherwise be forced through multiple rounds of law court proceedings to achieve complete relief, equity could step in and resolve the matter whole.
Common Confusion
Circ of action (circuity of action) is frequently conflated with multiplicity of suits. Both involve unnecessary proliferation of litigation and both supported equity jurisdiction, but they address different problems. Multiplicity of suits describes repeated actions against the same defendant on the same right — the concern is harassment and inconsistent judgments. Circuity of action describes a chain of sequentially necessary suits — the concern is procedural inefficiency forcing parties through multiple courts to reach a result achievable in one. A researcher encountering either term in historical equity arguments should confirm which problem the court is addressing before applying modern procedural analogies.
Why It Matters in Research
This term appears almost exclusively in older legal sources. Researchers encountering "circ of action" in historical pleadings, equity opinions, or treatises should understand it as shorthand for "circuity of action" — a fully spelled-out term more commonly found in later authorities. The abbreviated form "circ" was a common shorthand convention in early legal dictionaries and practitioners' manuals, not a term of art distinct from the full phrase.
The doctrine of avoiding circuity of action was a significant justification for equity jurisdiction in the English and early American systems. Courts of equity could consolidate what would otherwise be a chain of law court actions — plaintiff sues defendant, defendant must then sue a third party, and so on — into a single equitable proceeding. Researchers tracing equity jurisdiction arguments in historical case law will find this doctrine invoked frequently as a basis for equitable relief.
With the merger of law and equity courts in most American jurisdictions (accomplished federally by the Federal Rules of Civil Procedure in 1938, and at varying points in state courts), the procedural problem circ of action was meant to address largely dissolved. Modern joinder rules, counterclaims, third-party practice, and interpleader accomplish by rule what equity accomplished by jurisdiction. As a result, the term largely disappears from post-merger legal literature.
Trap for researchers: searching historical equity records for this term may require variant spellings and abbreviations. "Circuity," "circuity of action," "multiplicity of suits," and "circ. of action" may all appear in sources addressing the same doctrine. These are not always treated as identical concepts — multiplicity of suits emphasizes the burden on courts and defendants from repeated actions on the same right, while circ of action emphasizes the unnecessary sequencing of suits that a single proceeding could replace. The distinction is subtle but occasionally turns on the specific equitable argument being made.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) defines the term concisely and accurately: a litigant's use of a "complex, indirect, or roundabout course of legal proceeding" that "makes two or more actions necessary" where a more direct course would have accomplished the same result in a single suit. This captures the core concept well.
What Black's does not supply — and what researchers should seek elsewhere — is the doctrinal context: the relationship between circ of action and equity jurisdiction, the connection to the clean-up doctrine and complete relief principles, and the gradual obsolescence of the concept following procedural merger. Older equity treatises, including Story's Commentaries on Equity Jurisprudence, develop the doctrine more fully and situate it within the broader justifications for concurrent equity jurisdiction.