“intense / to excite” in Japanese is 激, read geki, hage (げき, はげ). It is a Grade 6 Kyōiku kanji, taught in year 6 of Japanese elementary school, and appears in words such as 激しい (intense).
What does 激 mean?
雨が激しく降ってきた。
Same sound, different character — the classic trap. Compare them side by side: