activate
B2Formal and technical, but also common in general contexts.
Definition
Meaning
To make something start working or functioning; to set in motion.
To trigger a process, initiate a function, or cause a substance to become active. In technology, to start a program or device; in chemistry, to make a substance reactive; in psychology, to stimulate mental processes.
Linguistics
Semantic Notes
Often implies initiating a process that was dormant or inactive. Can be used both literally (activating a machine) and figuratively (activating a memory). Contrasts with 'deactivate'.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling is identical.
Connotations
Similar technical and formal connotations in both varieties.
Frequency
Slightly more common in American English in technical/business contexts (e.g., 'activate your account'), but high frequency in both.
Vocabulary
Collocations
Grammar
Valency Patterns
SVO (He activated the alarm.)SVO + Prep (Activate the software by entering the code.)Passive (The feature is activated automatically.)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Activate the kill switch”
- “Activate plan B”
Usage
Context Usage
Business
To start a service, subscription, or account. 'Please activate your new credit card online.'
Academic
To initiate a process or reaction, especially in sciences. 'The enzyme activates the metabolic pathway.'
Everyday
To start a device or function. 'I can't activate the new phone without a signal.'
Technical
To make a system operational or a substance chemically reactive. 'The failsafe will activate if pressure exceeds limits.'
Examples
By Part of Speech
verb
British English
- Press the red button to activate the emergency lights.
- You must activate your railcard before your first journey.
- The alarm is activated by motion sensors.
American English
- Click the link to activate your new email account.
- The security system activates automatically at 6 PM.
- Activate the subscription by entering your payment details.
adverb
British English
- The system responded activationly. ❌ (No standard adverb form; use 'in an activated state' or rephrase.)
American English
- The device functions activationly. ❌ (No standard adverb form; use 'when activated'.)
adjective
British English
- The activated charcoal filter needs replacing.
- An activated account is required for access.
American English
- Use an activated phone to complete the setup.
- The activated feature is now visible in your dashboard.
Examples
By CEFR Level
- Activate the phone.
- The key activates the car.
- You need to activate your new bank card before using it.
- How do I activate the wi-fi on this laptop?
- The sensor will activate the sprinklers if it detects heat.
- Certain foods can activate an allergic reaction.
- The speech activated a profound emotional response in the audience.
- Researchers sought to activate the dormant gene using targeted therapy.
Learning
Memory Aids
Mnemonic
Think of 'ACTIVE' + '-ate'. To make something ACTIVE.
Conceptual Metaphor
ACTIVATION IS AWAKENING (waking a dormant system), ACTIVATION IS IGNITION (starting an engine).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'активировать' for non-technical 'start/begin'.
- Do not confuse with 'motivate' (мотивировать). 'Activate' is about function; 'motivate' is about reason.
- In Russian, 'включить' (to turn on) is often more natural for devices than калька 'активировать'.
Common Mistakes
- Using 'activate' for people (e.g., 'The teacher activated the students' ❌; use 'motivated' or 'energized').
- Confusing 'activate' (make functional) with 'actualize' (make real).
- Overusing in non-technical contexts where 'start' or 'turn on' is simpler.
Practice
Quiz
In which context is the use of 'activate' LEAST appropriate?
FAQ
Frequently Asked Questions
No. While common in tech, it is also used in biology ('activate an enzyme'), chemistry, psychology ('activate a memory'), and general contexts ('activate a plan').
'Activate' often implies enabling a pre-existing function or making a dormant system operational. 'Start' is more general and can refer to beginning any action. You 'start' a car engine, but 'activate' its cruise control feature.
Not typically for making a person start an action (use 'motivate' or 'prompt'). It can be used for parts of people, e.g., 'activate your muscles' or 'the drug activates the immune system'.
No, 'activize' is non-standard. The correct verb is 'activate'. The related noun is 'activation' and adjective is 'active' or 'activated'.