词根词缀：-or; -our (primarily British)

【来源及含义】Latin: a suffix; state of, result of; he who, that which

【同源单词】abdicator, abductor, ablator, acanthor, accelerator, adductor

词根词缀：stimul-

【来源及含义】Latin: impel, goad, sting, spur, incentive, full of incentives

【同源单词】contrastimulant, hyperstimulation, immunostimulant, narcostimulant, psychostimulant, stimulant