aftereffect
C1Formal, Academic, Technical
Definition
Meaning
A result or consequence, typically a delayed, secondary, or indirect effect, of an event or action.
An effect that is experienced some time after the event or action that caused it, often applied in contexts such as medicine (side effects of drugs), psychology (trauma responses), and social/political situations (long-term impacts of policies or disasters).
Linguistics
Semantic Notes
Strongly implies causality and a temporal delay. Often carries a neutral or negative connotation, suggesting an unintended or undesirable consequence.
Dialectal Variation
British vs American Usage
Differences
Spelling: 'after-effect' (hyphenated) is more common in British English, while 'aftereffect' (single word) is standard in American English. Usage frequency is similar.
Connotations
Identical in both variants. Often used in medical, psychological, and analytical contexts.
Frequency
Moderate frequency in formal writing; low frequency in casual conversation.
Vocabulary
Collocations
Grammar
Valency Patterns
experience [the] aftereffects of [NP]suffer from [the] aftereffects of [NP][NP] has/have an aftereffectthe aftereffects are [AdjP]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “The aftereffects are still being felt.”
- “It was the aftereffect that caused the real problem.”
Usage
Context Usage
Business
Analysing the aftereffects of the merger on employee morale took several quarters.
Academic
The study examined the neurological aftereffects of prolonged sleep deprivation.
Everyday
I had a terrible headache as an aftereffect of the noisy concert.
Technical
The patient was monitored for potential cardiovascular aftereffects of the experimental treatment.
Examples
By Part of Speech
noun
British English
- The most significant after-effect of the policy was widespread public distrust.
- She experienced psychological after-effects for years.
American English
- The most significant aftereffect of the policy was widespread public distrust.
- She experienced psychological aftereffects for years.
Examples
By CEFR Level
- One aftereffect of the storm was that many roads were closed.
- A common aftereffect of the flu is feeling very tired.
- The economic aftereffects of the crisis were felt for a decade.
- The medication has no serious aftereffects for most patients.
- The report meticulously details the social and political aftereffects of the revolution.
- Researchers are still grappling with the long-term cognitive aftereffects of the virus.
Learning
Memory Aids
Mnemonic
Think: AFTER an event, its EFFECTS appear. An AFTER-EFFECT.
Conceptual Metaphor
EVENTS ARE FORCES THAT LEAVE TRACES / CONSEQUENCES ARE RESIDUES.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'послеэффект'. Use 'последствие', 'отсроченный эффект', or 'побочное действие' depending on context.
Common Mistakes
- Using 'aftereffect' to mean an immediate result (e.g., 'The aftereffect of the punch was instant pain' - incorrect). Confusing with 'side effect' (which is more specific to medicine).
Practice
Quiz
In which context is 'aftereffect' LEAST likely to be used?
FAQ
Frequently Asked Questions
No, but it is most frequently used for neutral or negative consequences. Positive aftereffects are possible but less commonly cited.
'Side effect' is almost exclusively used for secondary, often undesirable, effects of a drug or medical treatment. 'Aftereffect' is broader, applying to any delayed consequence of any event.
No, 'aftereffect' is only a noun.
In American English, 'aftereffect' is standard. In British English, 'after-effect' (hyphenated) is more common, but the closed form is also accepted.