N2 — outside your level filter
を契機に
をけいきにo keiki niN2formal
seizing N as the turning point; treating N as the occasion
市は事故を契機に通学路の点検を始めた。
shi wa jiko o keiki ni tsuugakuro no tenken o hajimeta.
The city began inspecting the school routes, taking the accident as the turning point. neutral
病気を患ったことを契機に、彼は生活習慣を大きく見直した。
byouki o wazuratta koto o keiki ni, kare wa seikatsu shuukan o ookiku minaoshita.
Falling ill was the turning point that led him to overhaul his lifestyle habits. neutral
Same meaning5
with X as the trigger; on the occasion of
- に当たってon the occasion of; in undertaking — a big step about to beginattaches at
- に際してat the time of; on the occasion of — for a big eventattaches at
- をきっかけにwith N as the trigger; N is what sparked itattaches at
- 折にon the occasion of; when the opportunity arises — warmer than 際にattaches at
- ついでにwhile you're at it; taking the opportunity to do; incidentallyattaches at
All examples4
seizing N as the turning point — a big event chosen on purpose
市は事故を契機に通学路の点検を始めた。
shi wa jiko o keiki ni tsuugakuro no tenken o hajimeta.
The city began inspecting the school routes, taking the accident as the turning point. neutral
病気を患ったことを契機に、彼は生活習慣を大きく見直した。
byouki o wazuratta koto o keiki ni, kare wa seikatsu shuukan o ookiku minaoshita.
Falling ill was the turning point that led him to overhaul his lifestyle habits. neutral
定年退職を契機に、田舎で新しい生活を始めることにした。
teinen taishoku o keiki ni, inaka de atarashii seikatsu o hajimeru koto ni shita.
Taking my retirement as the turning point, I decided to start a new life in the countryside. neutral
今回の事故を契機として、安全管理体制を全面的に見直すこととなりました。
konkai no jiko o keiki to shite, anzen kanri taisei o zenmenteki ni minaosu koto to narimashita.
Taking this accident as the occasion, we will thoroughly overhaul our safety management system. formal
How it's formed1
All forms1
を契機としてwokeikitoshiteformal
even more bookish, for corporate announcements and reports (を契機として). をきっかけに also works but reads lighter, less serious.