Without mediation or intermediaries; directly or personally. Describes something done firsthand or immediately without an intermediary.
彼に直接意見を伝えた方がいい。
It's better to tell him your opinion directly.
この問題は部長と直接話して解決した。
We resolved this issue by speaking with the manager directly.
原因を直接調べる必要がある。
It's necessary to investigate the cause directly.