意気込む
いきごむ · ikigomu · JLPT N1 · verb-godan
to be enthusiastic about
🔥 意気 (spirit, morale) + 込む (pack in) = pack your spirit in, so you're fired up
意気 means spirit or morale, and 込む means to put something into a thing. Together they describe putting your whole spirit into an effort, so you feel ready and eager.