Is he irrationally, overemotional, and reactive?

他缺乏理性，情感过剩，反应强烈？

youdao

You want to create an emotional connection to your reader. That doesn't mean that you should be overemotional though.

你想和你的读者建立情感纽带，也并不是意味着你就应该过分感情化。

youdao

A once proud part of the human race, the younger generation has been described as lazy, overemotional, and disrespectful.

我一度以人类的竞争为荣，但年轻的一代人却被形容为懒惰的、情绪化的、无礼的。

youdao

"The Iranophobic American movie attempts to describe Iranians as overemotional, irrational, insane, and diabolical while at the same, the CIA agents are represented as heroically patriotic, " it complained.

CNN: Coming soon: Iran's response to 'Argo'