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📕 rednote ID(小红书号)：3881567312

Constrain: Definition, Usage & Common Mistakes (2 meaning)

Meaning 1：limit or restrict (constrain)

constrain 🔊

/kənˈstreɪn/

vt.

To restrict or limit something so it cannot move or grow freely.

Constrain meaning illustrated: person confined inside transparent box, showing limitation.

limit or restrict 🔊

➕

/ˈlɪmɪt ɔːr rɪˈstrɪkt/

vt.

This meaning focuses on setting boundaries or reducing the scope, movement, or development of something, often implying an external factor creates the limitation.

📁 Category：Social Economy 🔖 Level：Intermediate

📘 Details & Usage

📖 Root Explanation

From Latin 'constringere' (to bind together, tighten), from 'con-' (together) + 'stringere' (to draw tight, bind).

💡 Mnemonic

Imagine being tied to a train: you are con-STRAIN-ed and cannot move freely.

📖 Example

High costs constrain our plans to expand the business. 🔊 High costs limit our plans to expand the business.

🔗 Collocations

severely constrain – to limit something to a great degree

budgetary constraints – limitations caused by a budget

constrain growth – to restrict expansion or development

🔄 Synonyms

restrict (vt.) – to put a limit on something

limit (vt.) – to set a point or level beyond which something cannot go

confine (vt.) – to keep within certain bounds or limits

🚫 Antonyms

liberate (vt.) – to set free from a situation of restriction

free (vt.) – to release from constraints or obligations

🌱 Derivatives

constraint (n.) – a limitation or restriction

constrained (adj.) – appearing forced or unnatural; limited

📖 Cultural Story

The word 'constrain' entered English from Old French 'constreindre', rooted in Latin 'constringere'. Its core imagery of 'binding tightly together' underpins modern usage in contexts like law (constrained by rules), engineering (constrained by materials), or resource management, reflecting inherent limits or obligations.

Meaning 2：compel or force (constrain)

constrain 🔊

/kənˈstreɪn/

vt.

To force or compel someone to do something, often because of rules or situations.

Constrain definition: person being compelled by authority figure in office setting.

compel or force 🔊

➕

/kəmˈpel ɔːr fɔːrs/

vt.

This meaning emphasizes an external pressure, rule, or circumstance that makes someone act in a specific way, often against their natural inclination.

📁 Category：Laws & Regulations 🔖 Level：Intermediate

📘 Details & Usage

📖 Example

Safety rules constrain workers to wear helmets at the construction site. 🔊 Safety rules compel workers to wear helmets at the construction site.

🔗 Collocations

legally constrain – to compel by law

constrain someone to do something – to force a person to take a specific action

morally constrained – feeling forced to act by a sense of ethics

🔄 Synonyms

compel (vt.) – to force or oblige someone to do something

force (vt.) – to make someone do something against their will

oblige (vt.) – to bind or compel someone by a legal, moral, or formal rule

🚫 Antonyms

allow (vt.) – to give permission; not to prevent

permit (vt.) – to authorize or give consent for something

🌱 Derivatives

constrained (adj.) – showing signs of feeling forced or unnatural

constraint (n.) – a thing that forces compliance