Fetching details from the dictionary...
genuine; real; authentic; standard; orthodox
full-scale; full-blown; all-out; full-fledged; fully fledged; full; proper; real; earnest; serious
本格的な冬の寒さがやってきた。
The genuine cold of winter has arrived.
本格的なイタリア料理が楽しめるレストランだ。
It's a restaurant where you can enjoy authentic Italian cuisine.
来月から本格的にプロジェクトが動き始める。
The project will start moving in earnest from next month.