Fetching details from the dictionary...

enough; sufficient; plenty; adequate; satisfactory
sufficiently; fully; thoroughly; well; perfectly
division into ten
睡眠を充分に取ることが大切だ。
Getting enough sleep is important.
充分に準備をしてから出発した。
I departed after preparing thoroughly.
まだ充分ではないが、進歩はした。
It's not enough yet, but progress was made.