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The Japanese word

就任

is pronounced
shuunin | しゅうにん
means
inauguration, assumption of office
Examples:
彼は二年前に就任した。
kare wa ni nen mae ni shūnin shi ta.
He took office two years ago.
彼らは彼を委員会の議長に就任させた。
karera wa kare o īn kai no gichō ni shūnin sa se ta.
They installed him as chairman of the committee.
シドニー支店長に就任すると伺いました。
shidonī shiten chō ni shūnin suru to ukagai mashi ta.
I heard you have become Branch Manager of the Sydney office. | I heard that you became the manager of the Sydney branch.
ケネディー氏は合衆国大統領として就任した。
kenedī shi wa gasshūkoku daitōryō toshite shūnin shi ta.
Mr Kennedy was inaugurated as the President of the United States.
専務取締役ご就任と聞き、大変喜ばしく思いました。
senmu torishimariyaku go shūnin to kiki, taihen yorokobashiku omoi mashi ta.
I was delighted to hear of your promotion to Senior Managing Director.
専務取締役にご就任されるとのこと、おめでとうございます。
senmu torishimariyaku ni go shūnin sa reru to no koto, omedetō gozai masu.
I was delighted to hear of your promotion to Senior Managing Director.
Examples sourced from tatoeba.org