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stimulant
This term carries a clinical and physiological weight, often evoking the image of a sudden spike in energy, alertness, or heart rate. It describes an external trigger that forces a system into a higher state of arousal, whether that system is a human brain or a national economy. While it can be used neutrally in medical or economic contexts, in social settings it often hints at a dependency or an artificial boost. It differs from an inspirer or a motivator because a stimulant typically works on a chemical or mechanical level to trigger a reaction rather than appealing to a person's will or emotions.
Countable when referring to a specific drug or chemical agent (a stimulant). Uncountable when referring to the general quality of being stimulating or a broad economic force.
Ý nghĩa
A substance that increases activity of the central nervous system.
"The coffee acted as a mild stimulant to keep him awake."
Something that encourages increased activity or enthusiasm in a particular process.
"The tax break served as a stimulant for small business growth."