词根词缀：-or; -our

【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：tribu-, trib-

【来源及含义】Latin: to assign, to allot, to bestow, to give, to grant; from tribe, to give out among the tribes was tribuere which is the source of many of the words located in this unit

【同源单词】attributable, attribute, attribute, attribution, attributive, attributively