stimulant

noun

stim·​u·​lant ˈstim-yə-lənt 

1

: an agent (such as a drug) that produces a temporary increase of the functional activity or efficiency of an organism or any of its parts

2

: stimulus

3

: an alcoholic beverage

—not used technically

stimulant adjective

Synonyms of stimulant

• incentive
• stimulus
• impetus
• encouragement
• motivation

Examples of stimulant in a Sentence

The movie was a stimulant to discussion.

the relaxed zoning regulations should serve as a stimulant for development in the area

Recent Examples on the Web

Children with preexisting conditions such as high blood pressure are at especially high risk, Hannon said, but even healthy children who get too much of a stimulant can have serious problems. — ABC News, 3 Oct. 2026

As a practicing psychiatrist, Lembke routinely prescribes stimulants for ADHD, opioids for pain and benzodiazepines for insomnia and anxiety. — James Cirrone, FOXNews.com, 24 Sep. 2026

Researchers have found evidence that ancient humans chewed on betel nuts, a stimulant still widely used today. — Devika Rao, TheWeek, 21 Sep. 2026

Energy drinks are not designed to treat dehydration and often contain sugar and stimulants that may worsen symptoms. — Sarah Jividen, Verywell Health, 17 Sep. 2026

Word History

First Known Use

circa 1728, in the meaning defined at sense 1

Kids Definition

stimulant

noun

stim·​u·​lant ˈstim-yə-lənt 

1

: something (as a drug) that temporarily increases the activity or efficiency of the body or one of its parts

a heart stimulant

2

: stimulus sense 1

stimulant adjective

Medical Definition

stimulant

noun

stim·​u·​lant ˈstim-yə-lənt 

1

: an agent (as a drug) that produces a temporary increase of the functional activity or efficiency of an organism or any of its parts

2

: stimulus sense 2