stimulant
- 刺激 nounstimulusstimulus; stimulation; a source of provocation or physical/mental excitement
- 剂 劑 nounmedicinal or chemical preparation(bound form) A substance made by mixing ingredients for a specific medical or chemical effect, such as a lotion, catalyst, or disinfectant; often found in words like 药剂
irritant
- 刺激 verbadjectiveto irritateto irritate; to sting; to affect the sense organs in a way that causes discomfort, such as strong light or chemical irritants
- 剂 劑 nounmedicinal or chemical preparation(bound form) A substance made by mixing ingredients for a specific medical or chemical effect, such as a lotion, catalyst, or disinfectant; often found in words like 药剂