constrain
B2Formal to Neutral
Definition
Meaning
To force someone or something to act or behave in a particular way by restricting their freedom or natural development.
To limit or restrict the scope, size, or activity of something. Also, to produce a state or action by compulsion or necessity.
Linguistics
Semantic Notes
"Constrain" implies the action of external limits, rules, or forces. It often conveys a sense of pressure or restriction that prevents free action or development. It is less about physical confinement (like 'confine') and more about limiting possibilities, choices, or growth through various pressures.
Dialectal Variation
British vs American Usage
Differences
No significant difference in core meaning or usage. Spelling is identical.
Connotations
Equally formal in both varieties. Slightly more common in written, academic, or official contexts.
Frequency
Similar frequency in both BrE and AmE.
Vocabulary
Collocations
Grammar
Valency Patterns
[verb] + [object] (constrain development)[verb] + [object] + from + [gerund] (constrained him from acting)[verb] + [object] + to + [infinitive] (constrained them to accept)[passive] be constrained + by + [noun] (was constrained by the budget)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “To feel constrained”
Usage
Context Usage
Business
Used to describe limits on budgets, markets, or operations (e.g., 'Supply chain issues constrained production').
Academic
Common in social sciences and economics to discuss factors limiting behaviour or outcomes (e.g., 'Their choices were constrained by social norms').
Everyday
Less common, but used for significant limitations (e.g., 'I feel constrained by my work schedule').
Technical
Used in engineering, computing, and mathematics to describe limiting conditions or parameters (e.g., 'a constrained optimization problem').
Examples
By Part of Speech
verb
British English
- The company's spending is constrained by the new regulations.
- Poor infrastructure constrains regional economic growth.
- I didn't want to go, but I felt constrained to agree.
American English
- The research was constrained by a tight budget.
- Lack of data constrains our ability to make accurate predictions.
- He felt constrained by his family's expectations.
adverb
British English
- N/A (Extremely rare and non-standard for 'constrainedly')
American English
- N/A (Extremely rare and non-standard for 'constrainedly')
adjective
British English
- The constrained tone of the report suggested underlying tensions.
- They offered a constrained apology.
American English
- She spoke in a constrained voice, trying to control her anger.
- The design feels a bit constrained and unoriginal.
Examples
By CEFR Level
- High prices constrain what many people can buy.
- Bad weather constrained our plans for a picnic.
- The government's policies severely constrain the freedom of the press.
- We are constrained by time, so we must make a decision quickly.
- The treaty constrains all signatory nations from developing nuclear weapons.
- Artistic expression was heavily constrained by the political regime.
Learning
Memory Aids
Mnemonic
Think of a TRAIN on a fixed track. The rails CONSTRAIN it, forcing it to go a certain way and nowhere else.
Conceptual Metaphor
CONSTRAINT IS A PHYSICAL BOUNDARY/FORCE (e.g., 'boxed in by rules', 'under pressure to comply').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid confusing with 'construct' (строить).
- Do not use as a direct translation for 'ограничивать' in all physical confinement contexts; better for abstract limits.
- Note the preposition patterns: 'constrained by' (чем-то), 'constrained from doing' (от + герундий по-англ.).
Common Mistakes
- Incorrect: 'They constrained him in a room.' (Use 'confined').
- Incorrect: 'The law constraints pollution.' (Wrong part of speech; use 'constrains' as verb or 'imposes constraints on').
- Mixing up 'constrain' (force/limit) and 'restrain' (hold back physically or from action).
Practice
Quiz
Which of the following sentences uses 'constrain' correctly?
FAQ
Frequently Asked Questions
'Constrain' typically refers to limiting or forcing someone/something through indirect pressures, rules, or conditions (e.g., constrained by law). 'Restrain' more often refers to physically holding back or preventing an immediate action (e.g., restrain a person, restrain one's anger).
It is generally neutral but leans negative as it implies a limitation on freedom, choice, or growth. Context determines the evaluation (e.g., 'constrained by safety rules' can be seen as positive).
Yes, very commonly. E.g., 'She felt constrained by tradition,' 'Growth is constrained by several factors.'
The noun is 'constraint' (e.g., financial constraints, time constraints).