Dramatic
noun, 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.
ダイエットを始めて三ヶ月で体型が劇的に変化しました。
Three months after starting my diet, my body had changed dramatically.
劇的とまではいかないけれど、売り上げが上がったことは間違いないようです。
While it's not a dramatic increase, it does seem that they received quite a bit of revenue.
応援してるチームが劇的なさよならホームランで勝利を納めた時、思わずウルッときてしまいました。
I got tears in my eyes when my favorite team won the game with a dramatic home run.