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

Meanwhile, 18-to-25-year-olds saw declines in the use of nicotine products, tobacco, cigarette, alcohol and binge drinking in the past month as well as the use of illicit drugs and prescription stimulants or opioids within the past year. — Mary Kekatos, ABC News, 1 Aug. 2026

Some people use it for its stimulant or pain-relieving effects, though federal health officials have repeatedly warned about its safety. — Stepheny Price, FOXNews.com, 30 July 2026

Evidence about ordinary coffee cannot be extrapolated to high-dose caffeine products or energy drinks, which may deliver caffeine rapidly and include other stimulants. — Robert Glatter, Forbes.com, 21 July 2026

For example, certain diuretics, antihistamines or stimulants may increase the risk of side effects from heat, according to the CDC. — Dinah Voyles Pulver, USA Today, 3 July 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