Achilles' heel means the particular weakness that can undermine an otherwise strong person, plan, product, or system.
The examples below show the expression in realistic workplace contexts. They also show the grammar around it, not only the definition.
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Lyra Practice helps you learn the nuance of high-value workplace expressions, then practice using them in realistic situations.
See how Lyra Practice works →Natural examples
Example 1
“The growth plan's Achilles' heel is its reliance on one sales channel.”
Example 2
“Limited integration could prove to be the product's Achilles' heel.”
Example 3
“The otherwise efficient process has one Achilles' heel: its manual approval handoff.”
Example 4
“The platform's Achilles' heel is its dependence on one specialist, despite its strong automation and reliability.”
Example 5
“The irreplaceable supplier is the service's Achilles' heel.”
Example 6
“The approval handoff is the Achilles' heel of the otherwise efficient process.”
Example 7
“The proposal's Achilles' heel is its reliance on one distribution partner.”
Example 8
“The system's Achilles' heel is an unsupported legacy component.”
Example 9
“The license is the plan's Achilles' heel: without it, the otherwise strong launch cannot proceed.”
Example 10
“The growth plan's Achilles' heel is its reliance on a single sales channel.”
More ways to build the sentence
These are the main patterns to practice:
[plan / product / system]'s Achilles' heelX's Achilles' heel is YY is the Achilles' heel of Xidentify / expose an Achilles' heelprove to be an Achilles' heelthe main / potential Achilles' heel
Use the pattern that matches your message. Do not force the expression into every sentence. A direct description is often better when the stakes are high or the audience may not know the phrase.
What the sentence needs to make clear
A strong sentence gives enough context for the listener to understand why the expression fits. Name the plan, behavior, decision, or result you mean. If the phrase contains criticism, connect it to observable facts rather than using it as a label.
Compare these nearby choices:
| Choice | What it adds |
|---|---|
| weakness | any disadvantage or limitation, including a minor one. |
| bottleneck | a step or resource that limits flow or throughput. |
| single point of failure | a component whose failure can stop a system. |
| fatal flaw | a defect presented as making failure or rejection likely, often stronger. |
| blind spot | an issue someone has not recognized or considered. |
These terms may describe the same situation from different angles. Choose the one that matches the point you need to make.
Tone and audience
Natural in internal strategic and competitive discussion when the weakness is consequential. In formal risk, audit, legal, or incident records, name the exact dependency or vulnerability directly.
Before using the expression, ask three questions:
- Does the sentence match the expression's real meaning?
- Is the tone suitable for this person and setting?
- Would a plain description be clearer or fairer?
Practice it aloud
Start with one of the common patterns. Add a real but non-confidential workplace situation. Then say the sentence once in a direct version and once in a softer version. This helps you control both meaning and tone.
The goal is not to memorize one example. It is to build a sentence that makes the meaning, evidence, and tone clear.
Lyra Practice helps advanced non-native English professionals learn the nuance of high-value workplace expressions and practice using them in realistic scenarios, so their English sounds natural, precise, and senior at work. Try Lyra Practice.