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How to Negotiate a Contract in English Without Getting Outplayed

The English contract vocabulary traps that cost real money: ambiguous clauses, terms worth clarifying before signing, and the exact questions to ask beforehand.

, 2 min read, Sales English

Also available in Français, Español

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Photo Rock Staar, Unsplash

Key takeaways

  • "Reasonable efforts" and "best efforts" don't carry the same legal weight in an English contract; never leave them without clarification.
  • A contract using "may" where you expected "shall" quietly turns an obligation into a mere possibility, and that difference changes everything.
  • Asking "can you walk me through this clause in plain English?" is a completely normal, professional question to ask a lawyer or an English-speaking partner.

Negotiating a contract in English without getting outplayed means spotting a small number of precise words that radically change a clause's meaning, even when the grammar looks simple.

"Best efforts" vs "reasonable efforts"

These two terms look interchangeable but aren't. "Best efforts" imposes a much stronger obligation (doing absolutely everything possible) than "reasonable efforts" (doing what's reasonable under the circumstances). If a partner proposes "reasonable efforts" where you expected a strong commitment, that's a signal to clarify.

Question to ask: "Can we use 'best efforts' here instead of 'reasonable efforts'?"

"Shall" vs "will" vs "may"

  • "Shall" = a firm contractual obligation ("The vendor shall deliver...")
  • "Will" = a planned future action, less legally binding
  • "May" = mere possibility, not an obligation ("The vendor may provide...")

A contract loaded with "may" where you expected firm commitments is a contract protecting the other party, not you.

The clauses to always have clarified

  • "Termination for convenience": the ability to end the contract without a specific reason. Always ask for the exact notice period required.
  • "Indemnification": who pays if something goes wrong. A vague clause here can expose you to unexpected costs.
  • "Auto-renewal": automatic renewal. Always ask "what's the notice period to cancel?"
  • "Exclusivity": a commitment to work only with this party. Verify the exact duration and scope.

The phrase that saves you in an English negotiation

If a clause isn't clear, never sign hoping to understand it later. Just say:

"Can you walk me through this clause in plain English? I want to make sure I understand it correctly before we move forward."

This is a completely professional phrase, never seen as a lack of competence, even between native English speakers negotiating with each other.

The habit worth keeping

Every time a word in the contract seems both technical and vague ("reasonable," "material," "substantially"), ask a precise question about what it means concretely in that specific contract. In business English, precision gets negotiated word by word, not paragraph by paragraph.

Frequently asked questions

Do you need a lawyer to negotiate a contract in English?
For an important contract, yes, ideally one fluent in English legal language. But knowing the common vocabulary traps helps you spot what needs checking even before you get there.
What's the difference between 'shall' and 'will' in a contract?
"Shall" expresses a firm contractual obligation. "Will" simply describes a future action, without the same binding force. Many modern contracts avoid "shall" altogether, but when it appears, it carries weight.
How do you politely say 'I disagree with this clause' in English?
"I'd like to revisit this clause" or "This clause doesn't quite work for us" are professional ways to signal disagreement without direct confrontation.