knock-on
C1Semi-formal, journalistic, business, technical (rugby).
Definition
Meaning
(of a cause or action) resulting in a series of further events or consequences, often unintended.
A compound noun or adjective describing a secondary or cascading effect. In sports (rugby), a specific infringement where a player knocks the ball forward with hand or arm and it touches the ground or another player.
Linguistics
Semantic Notes
Typically describes consequences that spread outwards, often in a chain reaction. Usually implies a negative, problematic, or complicating outcome, though neutral descriptions are possible.
Dialectal Variation
British vs American Usage
Differences
As a figurative term for a consequential effect, used in both UK and US English, though possibly more established in UK English. The sports meaning is exclusively used in rugby-playing nations (UK, Australia, NZ, SA). US English might use 'ripple effect' or 'domino effect' more frequently for the figurative sense.
Connotations
Slightly mechanistic or systemic connotation, often from management, economics, or logistics. Can imply a lack of foresight.
Frequency
Medium frequency in UK journalism and business analysis. Lower frequency in general US English outside specific contexts; the rugby term is not used in American sports.
Vocabulary
Collocations
Grammar
Valency Patterns
[Event/Decision] + has/causes/produces + a knock-on effect + on [System/Area]The + knock-on + of + [Event] + is/was + [Consequence]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “It's had a knock-on effect all down the line.”
Usage
Context Usage
Business
Used to discuss supply chain disruptions, cost increases, or market reactions (e.g., 'The factory closure had a knock-on effect on suppliers.').
Academic
Used in economics, sociology, and systems theory to describe interdependent outcomes.
Everyday
Used to explain how one personal or local problem leads to others (e.g., 'The train strike had a knock-on effect on road traffic.').
Technical
In rugby union/league: 'The referee penalised the player for a knock-on.'
Examples
By Part of Speech
adjective
British English
- The decision led to several knock-on delays across the project.
- We are assessing the knock-on implications of the new policy.
American English
- Analysts warned of knock-on costs for consumers.
- The storm's knock-on disruptions lasted for days.
Examples
By CEFR Level
- Bad weather can have a knock-on effect on flight times.
- The rugby player was unhappy about the knock-on call.
- Rising fuel prices inevitably create a knock-on effect for public transport fares.
- The knock-on of the IT failure was that all reporting was delayed by a week.
- The court's ruling is expected to have significant knock-on consequences for similar cases currently in litigation.
- Economic policymakers must consider the knock-on impacts of austerity measures on social services.
Learning
Memory Aids
Mnemonic
Imagine a row of dominoes. KNOCK one ON, and it causes the next to fall.
Conceptual Metaphor
CAUSATION IS A CHAIN REACTION / A SYSTEM IS A ROW OF DOMINOES.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate literally as "стучать на" which is nonsensical. Avoid using "эффект домино" (domino effect) for every instance; "цепная реакция" or "последствия" are often better fits.
Common Mistakes
- Using 'knock-on' as a verb (e.g., 'It will knock-on to other departments' – better: 'It will have a knock-on effect'). Confusing with phrasal verb 'knock on' (to physically knock on a door).
Practice
Quiz
In which context is 'knock-on' used as a precise technical term?
FAQ
Frequently Asked Questions
Yes, though less common. 'Knock-on benefits' describes positive secondary consequences, e.g., 'Investment in renewables has knock-on benefits for local job creation.'
It is semi-formal. Acceptable in business reports and journalism, but 'ripple effect' or 'secondary consequences' might be preferred in very formal academic writing.
A 'side effect' is often a parallel or unrelated consequence, while a 'knock-on effect' explicitly implies a causal chain where the first effect directly triggers the next.
You can use it attributively as an adjective before another noun (e.g., 'knock-on costs', 'knock-on delays'), or less commonly as a noun: 'One of the knock-ons was a staff shortage.'