stimulate

stimulate — verb

1. to make a process, activity, or system become more active, stronger, or faster,

1.verbtransitiveB2
Definition

to make a process, activity, or system become more active, stronger, or faster, often by creating helpful conditions or providing what it needs

Example

The government hopes the new tax cuts will stimulate economic growth.

collocation: stimulate economic growth

Doing regular light exercise stimulates blood flow and keeps the heart healthy.

stimulate + noun phrase (blood flow, circulation)

Common collocations
  • stimulate growth
  • stimulate demand
  • stimulate the economy
  • stimulate creativity
Synonyms
  • boost

    more informal, often used for numbers or sales

  • encourage

    softer, implies supporting rather than forcing

  • spur

    suggests a sudden or sharp push toward action

  • activate

    more technical; implies turning on a dormant process

Antonyms

Grammar Patterns

stimulate + noun phrase (growth, economy, demand, circulation)

Usage Note

The object is typically an abstract or collective noun such as growth, demand, the economy, the imagination, or creativity.

Common Mistakes

The policy stimulated.
The policy stimulated economic activity.
'stimulate' in this sense needs a direct object to say what becomes more active.

2. to make someone feel interested, curious, or eager to learn more about something

2.verbtransitiveB2
Definition

to make someone feel interested, curious, or eager to learn more about something or to take action

Example

The teacher's unusual question stimulated the students to think more deeply.

stimulate + person + to-infinitive

A good travel guide should stimulate the reader's wish to explore new places.

Common collocations
  • stimulate interest
  • stimulate curiosity
  • stimulate discussion
  • stimulate the imagination
Synonyms
  • arouse

    slightly more formal; often used for emotions and interest

  • spark

    more informal; suggests a quick sudden start

Antonyms
  • bore

    to make someone lose interest

Grammar Patterns

stimulate + noun phrase (interest, curiosity, discussion)

stimulate + person + to-infinitive

Usage Note

The object is often a person's mental or emotional state (interest, curiosity, imagination, desire) rather than the person directly.

Common Mistakes

The lecture stimulated me.
The lecture stimulated my interest in astronomy.
In this sense, 'stimulate' takes an abstract object like interest or curiosity, not a person as a direct object.

3. to cause a specific organ, nerve, muscle, or other tissue to start working or in

3.verbtransitiveB2
Definition

to cause a specific organ, nerve, muscle, or other tissue to start working or increase its natural activity

Example

The physiotherapist used a gentle electric current to stimulate the damaged muscle.

Acupuncture stimulates specific points on the body to help relieve chronic pain.

Common collocations
  • stimulate a nerve
  • stimulate a muscle
  • stimulate blood flow
  • stimulate the immune system
Synonyms
  • activate

    more technical; common in neuroscience and physiology

  • trigger

    suggests a sudden response or reflex

Antonyms
  • sedate

    to reduce activity, often with medication

Grammar Patterns

stimulate + noun phrase (nerve, muscle, organ, follicle)

Usage Note

Common in medical, therapeutic, and scientific contexts. The subject is usually a treatment, a device, or a physical action applied to the body.

4. If a substance such as a drug or chemical stimulates your mind or body, it makes

4.verbtransitive / intransitiveC1
Definition

If a substance such as a drug or chemical stimulates your mind or body, it makes you more alert, energetic, or active for a short time

Example

The caffeine in coffee stimulates the brain and helps people stay awake.

collocation: caffeine stimulates the brain

Rania avoids energy drinks because the sweeteners over-stimulate her nervous system.

Common collocations
  • stimulate the nervous system
  • stimulate the appetite
  • stimulate the mind
Synonyms
  • invigorate

    more formal; suggests making someone feel fresh and energetic

  • perk up

    informal; used in everyday conversation

Antonyms
  • calm

    to reduce excitement or activity

  • sedate

    to make someone sleepy or less active

Grammar Patterns

stimulate + noun phrase (nervous system, appetite, mind)

intransitive: noun + stimulates

Usage Note

The subject is typically a substance (caffeine, a medication, a chemical). Unlike sense 3, this sense describes the inherent property of a substance rather than a deliberate external action. Can be used intransitively: 'The drink stimulates.'

Word family

  • stimulation
    nounB2
  • stimulant
    nounB2
  • stimulus
    nounB2
  • stimulating
    adjectiveB2
  • unstimulating
    adjectiveC1
  • overstimulate
    verbC1

Synonym discussion

Sense: verb/1

All four words describe causing something to increase or become more active, but they differ in force and context. 'Boost' is the most informal and is often used with measurable outcomes — you boost sales, morale, or confidence ('The advert boosted sales by 20%'). 'Encourage' is softer, implying gentle support rather than a direct push, and often takes a person or a process as its object ('The mentor encouraged her to apply for the scholarship'). 'Spur' suggests a sudden, sharp motivation, like a spur that makes a horse move faster ('The deadline spurred the team into action'). 'Activate' is the most technical, commonly used for systems, devices, or biological processes ('The switch activates the alarm'). For general economic or creative growth, 'stimulate' is the broadest of the four — it can describe policy effects, biological responses, or intellectual engagement.

boostencouragespuractivate

Common collocations

Nouns

  • growth
  • economy
  • demand
  • interest
  • curiosity
  • activity
  • circulation
  • response

Adverbs

  • strongly
  • directly
  • greatly
  • gently
  • artificially

Phrases

  • stimulate the economy
  • stimulate demand for
  • stimulate interest in
  • stimulate the immune system

Prepositions

  • by
  • through
  • with
  • into

Etymology

LatinEnglish

Stimulate comes from the Latin verb 'stimulare', meaning 'to urge, goad, or prick'. That verb was formed from 'stimulus', a pointed stick used to drive animals forward. English borrowed the word in the 16th century, first using it in a literal sense of pricking or goading, then gradually expanding to the figurative meanings of encouraging growth, arousing curiosity, and activating bodily functions that are common today.