0 to make someone too excited or interested in something: --
A viral infection can overstimulate the immune system, causing problems like inflammation and tissue damage.
According to some experts, dairy products can overstimulate the ovaries to produce more oestrogen.
Too much fear can overstimulate our imagination: we jump at every creaking floorboard, until it becomes impossible to relax.
Policymakers need to be careful not to overstimulate the economy when an oil shock hits.
It is important not to overstimulate children just before bedtime.
In some people the drug may even have the unexpected effect of overstimulating instead of sedating.