意気込む
ikigomu
to be enthusiastic about
Example sentences
初めから意気込みすぎると、途中で息切れするぞ。
You have to pace yourself or you'll choke halfway through.
せっかく、英語で注文しようと意気込んで入ったのに、日本語で「いらっしゃいませ」って言われた。あれ？って感じ。
After I got all worked up about ordering in English, I walked in the store and they greeted me with "Irasshaimase!" I felt, like, "What the ...?"