Uninhibited, Extravagant, Rampant
Noun and な adjective
ほんぽう
あの自由奔放な性格に惹かれてしまったんだ。
I was attracted to his free and uninhibited personality.
Some day you'll run around, released from the world and its troubles and you'll end up running wild. All your actions will be completely uninhibited when you aren't tied to your school or your job. It will be great!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Just watch out because ほう becomes ぽう here.