going straight to a destination without stopping or detouring (e.g., a direct flight/service)
成田空港からロサンゼルスへ直行便が出ている。
There is a direct flight from Narita Airport to Los Angeles.
会議が終わったら事務所に寄らずに直行します。
After the meeting I'll go straight to the office without stopping by anywhere.
荷物が重いので駅からタクシーで直行した。
Because the luggage was heavy, I went straight from the station by taxi.
decisive or unwavering action; going straight to the point or dealing with something without hesitation
彼女の発言はいつも遠慮がなく、問題の核心に直行する。
Her remarks are always blunt; she goes straight to the heart of the issue.
余計な説明を省いて直行するのがこの会議の方針だ。
The policy of this meeting is to skip unnecessary explanations and get straight to the point.
upright conduct; honesty and straightforwardness (used occasionally in more literary or formal contexts)
彼は直行を美徳とする人物で、嘘をつかない。
He is a person who values upright conduct and does not tell lies.