perfective

名词 perfective:

1. a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)
   同义词：perfective tense, perfect, perfect tense
2. the aspect of a verb that expresses a completed action
   同义词：perfective aspect

per.fec.tive

adj.（形容词）
Tending toward perfection.
趋于完善的
Grammar Of or being a verb in the perfective aspect.
【语法】 动词完成体的
n.Grammar （名词）【语法】
The perfective aspect.
完成体
A verb in the perfective aspect.
完成体动词

【引伸】
perfec.tively
adv.（副词）
perfec.tiveness 或
per.fectiv.ity