What is another word for loses composure?
Pronunciation: [lˈuːzɪz kəmpˈə͡ʊʒə] (IPA) 
"Loses composure" is a phrase commonly used to describe someone who has become agitated or emotional in a high-pressure situation. However, there are many other words that can be used to convey this same idea. For example, someone who loses composure may also be described as frazzled, flustered, rattled, or unnerved. They may also be said to have lost their cool, poise, or self-control. Other synonyms for losing composure include becoming agitated, panicked, or overwhelmed. Whether you choose to use the phrase "loses composure" or one of its many synonyms, the important thing is to convey the sense of someone who is struggling to maintain their composure in a tense situation.
