What You'll Learn

  • Mutual meaning
  • Sources of meaning
  • The UCC hierarchy
  • Canons of construction
  • Good faith and gap-fillers

Educational information only; not legal advice. This article is a general study aid and should be checked against current authority and course materials.

1. Start with the Parties’ Actual Meanings

Parties’ understandings Result

Both attached the same meaning Use the shared meaning, even if a different meaning might seem more ordinary.

Different meanings; one party knew or had reason to know the other’s meaning Interpret against the party with superior knowledge and use the innocent party’s meaning.

Different meanings; neither knew or had reason to know There may be no mutual assent on the material term.

Key Takeaway

The outlines use Frigaliment as the classic ambiguity problem. Contract text, negotiations, trade usage, market evidence, regulatory usage, and the parties’ conduct can all help determine whether a disputed word has a narrow or broad meaning.

2. Use Context in an Orderly Way

The outlines identify several interpretive sources: the contract itself, preliminary negotiations, trade usage, expert testimony, regulations, market price, and the parties’ conduct. Do not dump every fact into one paragraph. Explain what each source tends to prove and whether it was known or reasonably available to both parties.

3. The UCC § 1-303 Hierarchy

Source Meaning

Express terms The words the parties chose for this contract.

Course of performance How the parties behaved repeatedly under this particular agreement.

Course of dealing How the same parties behaved in prior transactions.

Usage of trade A regular industry practice that justifies an expectation it will apply.

Express terms have priority, but the UCC prefers reasonable consistency where possible. Course of performance is especially powerful because it reveals how the parties themselves applied the disputed language after contracting. Repeated performance accepted without objection can also support waiver or modification.

4. Common Canons of Construction

● Whole-contract rule: read the document as a whole and related writings together. ● Specific over general: a precise negotiated term ordinarily carries more weight than broad boilerplate. ● Negotiated or handwritten over standardized: separately added terms better reflect this bargain. ● Against surplusage: prefer a reading that gives each word and provision a function. ● Same word, same sense: repeated language is presumed to carry consistent meaning unless context shows otherwise. ● Technical terms: words of art ordinarily receive their technical meaning in a transaction within that field. ● Contra proferentem: when genuine ambiguity remains, courts may construe language against the drafter. ● Lawful construction: when one reasonable interpretation is lawful and another unlawful, prefer the lawful reading.

5. Gap-Fillers and Good Faith

When a contract is intended to bind but omits a workable detail, a court may supply a reasonable term rather than declare failure. Gap-fillers reduce transaction costs and support the common purpose of the deal. Every contract also carries a duty of good faith: a party may not evade the spirit of the bargain, abuse discretion, obstruct performance, or deliberately render imperfect performance.

Key Takeaway

A supply agreement requires “monthly delivery” but says nothing about the delivery day. For three years, the seller delivered on the first business day and the buyer accepted without objection. Course of performance strongly supports that timing. A newly asserted reading allowing delivery on the last day of each month is weaker unless express language points that way.

Exam Tip

  1. Identify the disputed term. 2. State each plausible meaning. 3. Ask whether the parties shared a meaning or one knew of the other’s. 4. Read the whole contract. 5. Apply express terms, performance, dealing, and trade usage. 6. Use canons as aids, not substitutes for facts. 7. Check good faith and any reasonable gap-filler.

Common Mistake

Treating ambiguity as automatic invalidity; relying on a dictionary before reading context; applying contra proferentem first; confusing parol-evidence admissibility with the separate interpretation question; and ignoring course of performance.

Primary Authorities

  • ● Restatement (Second) of Contracts § 201.

  • ● U.C.C. § 1-303.

  • ● Frigaliment Importing Co. v. B.N.S. International Sales Corp. (interpretation of “chicken”).

Exam-ready conclusion

Interpretation is a disciplined search for manifested meaning. Begin with shared understanding and the whole text, add the parties’ performance and commercial context, and use canons only to resolve remaining uncertainty.