オフィス
オフィス · ofuィsu · JLPT N3 · noun
office
🏢💼 Borrowed from English office: o-fi-su, with a final su added
Japanese took this word straight from English. Japanese words can't end in a bare s, so a su sound gets added at the end: o-fi-su. The fi sound is written フィ, a small ィ after フ.