Dramatic
な adjective
Something that is drama al is dramatic.
げきてき
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
今日は皆さんに、電気代を劇的に安くする方法をお教えします。
Today, I would like to share with you all a way to dramatically reduce your electricity bill.
正直、ヘアスタイルを変えるだけで、見た目は劇的に変わります。
Frankly, a simple change in hairstyle can dramatically change one's appearance.
私は『劇的ビフォーアフター』という番組が大好きです。
I love the show called "Dramatic Before and After".