Fetching details from the dictionary...

diligently; seriously; earnestly; reliably; steadily; legitimately
perfectly; properly; exactly; orderly; punctually; regularly; safely; in good condition
sufficiently; satisfactorily
quickly
ちゃんと食べなさいよ。
Eat properly, will you?
遊ぶ前にちゃんと宿題をやりなさいね。
Do your homework properly.
ちゃんと確認してから提出しよう。
Let's double-check before submitting.