complication

B2
UK/ˌkɒm.plɪˈkeɪ.ʃən/US/ˌkɑːm.plɪˈkeɪ.ʃən/

Formal-neutral

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Definition

Meaning

A problem or difficulty that makes a situation harder to deal with or understand.

1. A secondary disease or condition that worsens a primary one. 2. An intricate or complicated element of a story or situation. 3. A state of complexity or intricate combination of parts.

Linguistics

Semantic Notes

While neutral in tone, it often implies an unwelcome, added layer of difficulty. In medical contexts, it is a precise technical term.

Dialectal Variation

British vs American Usage

Differences

No significant lexical differences. Spelling is consistent.

Connotations

Slightly more frequent in formal British contexts (e.g., 'further complications arose'). In American English, common in both formal and medical registers.

Frequency

Comparably frequent in both varieties.

Vocabulary

Collocations

strong
medical complicationfurther complicationarise complicationsserious complicationpost-operative complication
medium
add a complicationunforeseen complicationlead to complicationslegal complicationminor complication
weak
unexpected complicationtechnical complicationcomplicate mattersdiplomatic complicationlogistical complication

Grammar

Valency Patterns

complication (of something)complication (for someone/something)complication (in something)lead to a complicationarise as a complication

Vocabulary

Synonyms

Strong

ramificationintricacycomplexityentanglement

Neutral

difficultyproblemissuehitchsnag

Weak

setbackobstacledrawback

Vocabulary

Antonyms

simplificationsolutionresolutionclaritystraightforwardness

Phrases

Idioms & Phrases

  • to complicate matters
  • a plot complication
  • throw a complication into the works

Usage

Context Usage

Business

Referring to unexpected problems in a project or deal: 'The merger hit a legal complication.'

Academic

Describing complex factors in a theory or analysis: 'The study acknowledges several methodological complications.'

Everyday

Talking about problems in plans: 'Our holiday plans have encountered a slight complication.'

Technical

Primarily medical: 'The patient developed a pulmonary complication after surgery.'

Examples

By Part of Speech

verb

British English

  • The new evidence could complicate the investigation further.

American English

  • We don't want to complicate the process with unnecessary rules.

adverb

British English

  • The situation developed complicatedly over several weeks.

American English

  • The plot unfolded complicatedly, with many twists.

adjective

British English

  • It's a highly complicated legal matter.

American English

  • The instructions were unnecessarily complicated.

Examples

By CEFR Level

A2
  • The bad weather caused a complication for our picnic.
B1
  • There was a small complication with my travel visa, but it's sorted now.
B2
  • A last-minute complication in the negotiations delayed the signing of the contract.
C1
  • The novel's narrative is enriched by the moral complications faced by the protagonist.

Learning

Memory Aids

Mnemonic

Think of a PLICATION (a fold) becoming COM-PLICATED with many folds, making it hard to smooth out.

Conceptual Metaphor

PROBLEMS ARE KNOTS / TANGLES (e.g., 'untangle a complication').

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Avoid direct translation from Russian 'компликация' in non-medical contexts, as the Russian word is more narrowly medical. Use 'problem', 'difficulty', or 'issue' for general situations.
  • Do not confuse with 'compliment' (комплимент).

Common Mistakes

  • Using it as a countable noun without an article when singular: 'This is complication' (incorrect) vs. 'This is a complication' (correct).
  • Confusing 'complication' (noun) with 'complicate' (verb).

Practice

Quiz

Fill in the gap
The surgery was successful, but the patient later developed a post-operative .
Multiple Choice

In which context is 'complication' used most precisely?

FAQ

Frequently Asked Questions

Primarily yes, as it denotes an added problem. In literature or film, a 'plot complication' is a neutral narrative device.

A 'complication' is often a secondary problem that arises from an existing situation, making it more complex. A 'problem' can be primary or standalone.

Rarely. Its core meaning is an unwelcome difficulty. One might speak of a 'welcome complication' ironically or in very specific contexts (e.g., a challenging but interesting puzzle).

Use it to name a secondary, adverse health condition: 'Diabetes can lead to complications such as nerve damage or vision problems.'

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