weak sister
LowInformal, Figurative, Sometimes Pejorative
Definition
Meaning
A person, group, or thing that is notably weak, ineffective, unreliable, or underperforming within a collective or system.
An element that is the least dependable or most vulnerable component in a team, plan, or structure, often causing failure or requiring support from others.
Linguistics
Semantic Notes
Primarily a noun phrase. Originated in US English (late 19th/early 20th century), possibly from the idea of a physically or morally frail sibling. Often used in competitive contexts (sports, business, military) to denote a liability.
Dialectal Variation
British vs American Usage
Differences
The term is primarily American in origin and remains more common in AmE. In BrE, it is understood but less frequently used; alternatives like 'weak link' are more typical.
Connotations
In AmE, it can carry a gendered nuance (historically associating weakness with femininity), though this is often downplayed in modern usage. In BrE, the term may sound like an Americanism.
Frequency
Infrequent in both dialects, but significantly more so in AmE. Considered somewhat dated or clichéd.
Vocabulary
Collocations
Grammar
Valency Patterns
[The/Our] + weak sister + [of/in] + [group/system][Subject] + is/becomes + the weak sisterVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “the weak sister of the bunch”
- “carry the weak sister”
Usage
Context Usage
Business
Used to describe an underperforming division, product line, or team member, e.g., 'The marketing department is seen as the weak sister this quarter.'
Academic
Rare. Might appear in historical or sociological texts discussing gendered language or in critiques of competitive systems.
Everyday
Used informally to describe the least reliable person in a group project, sports team, or family dynamic.
Technical
Not used in formal technical contexts.
Examples
By CEFR Level
- Everyone knew he was the weak sister on the team, always missing easy shots.
- In our group of friends, I'm the weak sister when it comes to staying up late.
- The company's European division has long been considered the weak sister, consistently failing to meet its revenue targets.
- Their defence was solid, but the left midfielder was a real weak sister, constantly losing possession.
- The senator's foreign policy stance was the weak sister of his platform, repeatedly criticised for its lack of detail and coherence.
- While the engine and chassis are robust, the electrical system is the perennial weak sister in this vehicle model.
Learning
Memory Aids
Mnemonic
Think of a chain where one link is a 'sister' (a female sibling) depicted as fragile and breaking easily, weakening the whole chain.
Conceptual Metaphor
AN ORGANIZATION/GROUP IS A FAMILY, WEAKNESS IS FEMININITY (often archaic), RELIABILITY IS STRENGTH.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation like 'слабая сестра'. It is an idiom. Use 'слабое звено' (weak link) or 'ахиллесова пята' (Achilles heel) instead.
- Do not interpret 'sister' literally; it does not refer to a familial relationship.
Common Mistakes
- Using it to refer to an actual female sibling (incorrect).
- Using it in formal writing.
- Overusing the term, as it is somewhat clichéd.
Practice
Quiz
In which context is 'weak sister' LEAST likely to be used appropriately?
FAQ
Frequently Asked Questions
It can be perceived as such due to its historical association of femininity with weakness. Many modern speakers prefer gender-neutral alternatives like 'weak link'.
Yes, it can be used figuratively for any underperforming component in a system, such as a weak sister product in a lineup or a weak sister sector in an economy.
'Weak link' is the most direct and commonly used synonym, especially in British English.
No, there is no common idiomatic equivalent 'weak brother'. The phrase 'weak sister' is a fixed expression.