Godan verb with 'ru' ending, Intransitive verb
to become aroused (of emotions, nerves, etc.); to become excited; to become stirred up; to become worked up
昨夜彼女は神経が高ぶっていた。She was a bundle of nerves last night. to be proud; to be haughty; to be pompous; to be self-important
Also written 昂ぶる【たかぶる】、昂る【たかぶる】