stimulant

US /ˈstɪm.jə.lənt/
UK /ˈstɪm.jə.lənt/
"stimulant" picture
1.

a substance that raises levels of physiological or nervous activity in the body

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Caffeine is a common stimulant found in coffee and tea.
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The doctor prescribed a mild stimulant to help with fatigue.
:
energizerboosterupperpick-me-uptonic
2.

a thing that stimulates development or activity

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The new policy acted as a stimulant for economic growth.
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The competition served as a great stimulant for innovation.
:
catalystimpetusincentivespurgoad
:
stimulatestimulatingthyroid-stimulating hormone