rouse, stir up
興奮(こうふん)、奮闘(ふんとう)、発奮(はっぷん)
excitement, hard struggle, inspired
On-reading (フン) is used in compounds; kun-reading (ふる(う)) is used standalone or with okurigana. Appears in many compounds — memorize the key ones rather than the kanji in isolation. This kanji forms verbs/adjectives with okurigana. Practice both the word form and compound forms.
From the JLP Quiz question bank — the word in the form it is actually tested in.
観客は今にも舞台に押し寄せ___の興奮状態だった。
Answer: んばかりだ
「奮闘」の読み方は?
Answer: ふんとう