godan verb (-ru), intransitive verb
Attaches to the continuative form (連用形) of a verb to mean 'to finish doing that action'. The action is typically deliberate and brought to completion. Often used when the completion is the result of effort or a process.
長い小説をやっと読み終わった。
I finally finished reading the long novel.
彼は仕事
He went home after finishing all the work.