defect
B2Formal to neutral. The noun is common in formal and technical contexts; the verb (to defect) is formal and geopolitical.
Definition
Meaning
A fault, flaw, or shortcoming; an imperfection.
As a verb: to desert a cause, country, or organization to join another perceived as an opponent or enemy.
Linguistics
Semantic Notes
The noun typically refers to a flaw in an object, system, or person's character. The verb implies a significant, often ideological, abandonment, usually from one political entity to another.
Dialectal Variation
British vs American Usage
Differences
No major differences in meaning or usage. Pronunciation differs (see IPA). The verb is used identically in political/military contexts.
Connotations
Identical. The verb carries strong connotations of betrayal or ideological shift.
Frequency
The noun is slightly more frequent in technical/engineering contexts in both varieties. The verb usage is equally formal and less common.
Vocabulary
Collocations
Grammar
Valency Patterns
Noun: defect in [sth] (a defect in the software)Verb: defect from [country/party] to [enemy country/party] (He defected from the regime to the West.)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Achilles' heel (for a personal defect)”
- “fly in the ointment”
Usage
Context Usage
Business
Refers to flaws in products or processes, e.g., 'The recall was due to a safety defect.'
Academic
Used in sciences (e.g., 'crystal defect'), engineering, medicine ('congenital defect'), and social sciences.
Everyday
Used for faulty goods or minor character flaws, e.g., 'There's a defect in this glass.'
Technical
Precise term in manufacturing, quality control, medicine, and materials science.
Examples
By Part of Speech
verb
British English
- The diplomat decided to defect after becoming disillusioned with the regime.
- Several soldiers defected at the border under cover of night.
American English
- The intelligence officer defected, providing secrets to the other side.
- He defected from the party, citing irreconcilable ideological differences.
adverb
British English
- The machine was defectively manufactured. (Rare)
- The system performed defectively from the start. (Rare)
American English
- The software was defectively coded, leading to crashes. (Rare)
- The part was installed defectively. (Rare)
adjective
British English
- The defective component caused the entire system to fail.
- They recalled the defective toys due to a choking hazard.
American English
- The lawsuit focused on the defective design of the vehicle.
- The manufacturer replaced the defective unit free of charge.
Examples
By CEFR Level
- This cup has a defect – there's a crack in it.
- The toy was broken so we returned it because it was defective.
- The company found a serious defect in the car's brakes.
- The product was recalled due to a manufacturing defect.
- A minor defect in the software caused intermittent crashes.
- The scientist discovered a genetic defect linked to the disease.
- The defector provided invaluable intelligence after he defected from the rival agency.
- The philosophical argument had a fundamental logical defect which undermined its conclusion.
Learning
Memory Aids
Mnemonic
Think: 'The product was de-FAILED' -> it has a deFECT. For the verb: 'He de-PARTED to the enemy.'
Conceptual Metaphor
A DEFECT IS A HOLE/BREAK (in an otherwise complete/perfect structure). DEFECTING (verb) IS CROSSING A BORDER.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Не путать с 'дефект' (сущ.) – перевод точный. Глагол 'to defect' – это 'перебежать/сменить сторону', а не просто 'уйти' или 'сломаться'. 'Дефектный' = 'defective'. Avoid calquing 'make a defect' for 'to defect'.
Common Mistakes
- Incorrect stress: saying /dɪˈfekt/ for the noun. Using the verb for non-ideological/small-scale abandonments, e.g., 'He defected to another football team.' (Incorrect – use 'transferred').
Practice
Quiz
In which sentence is the word 'defect' used as a verb?
FAQ
Frequently Asked Questions
They are often synonyms. 'Defect' often implies something that impairs functionality or is a deviation from a standard, commonly used in technical contexts. 'Flaw' can be broader, covering imperfections in appearance, logic, or character, and is often used in non-technical contexts (e.g., 'a flaw in his argument', 'a character flaw').
The primary difference is stress. The noun 'DEFect' has stress on the first syllable (/ˈdiːfekt/). The verb 'deFECT' has stress on the second syllable (/dɪˈfekt/). This is consistent in both British and American English.
Yes, but carefully. You can say a person 'has a defect' (e.g., a genetic or physical defect). However, calling someone 'a defect' is strongly derogatory and dehumanizing. The verb 'to defect' refers specifically to a person's action of abandoning their country or group.
Overwhelmingly negative for both noun (a flaw) and verb (an act of betrayal/abandonment). The related adjective 'defective' is also negative. There is no positive connotation in standard usage.