godan verb (-ru), intransitive verb
rise; increase; swell; be heightened
Intransitive verb for abstract or emotional increase: feelings, tension, expectations, awareness, or quality levels rise or intensify. Not used for physical climbing or numerical data alone.
試合前、観客の期待が高まった。
Before the match, the audience's expectations rose.
環境問題への関心が高まっている。
Interest in environmental issues is increasing.
音楽が流れると、会場の雰囲気が一気に高まった。
When the music started, the atmosphere in the venue swelled all at once.